Is a blue diamond a real diamond?

Yes, a blue diamond is a real diamond. Contrary to popular belief, diamonds come in an array of colors aside from clear. Blue diamonds are neither color-treated nor enhanced to deliver the icy shade, which can range from a seafoam green to a royal blue.

Are there blue-green diamonds?

Yes, there are blue-green diamonds. However, natural ones are very rare, so most are man-made. The Dresden Green is the most famous example of a genuine blue-green diamond gemstone. You can find a wide selection of diamond gemstone jewelry on 1stDibs.

What is a blue diamond worth?

A light blue 0.5 carat diamond is worth roughly $26,280 on average. A deep blue 0.25 diamond, costs $75,000 on average. Blue diamonds are the rarest color of diamond, only found in three areas of the world: Australia, South Africa, and India. The deeper the blue diamonds are even more rare and therefore more expensive.

Are Blue Nile diamonds real diamonds?

Yes, Blue Nile diamonds are real diamonds. The luxury jewelry maker uses natural diamonds ethically sourced from mines for many of its pieces. In addition, Blue Nile offers an assortment of lab-created diamond rings, earrings, necklaces and bracelets. Lab-created diamonds are still real, but they are human-made rather than mined. On 1stDibs, find an assortment of Blue Nile diamond jewelry.

How can I tell if my blue diamond is real?

To tell if your blue diamond is real, look for a maker's mark on your piece. By researching the manufacturer using trusted online resources, you can find out if the jewelry maker tends to use authentic gemstones or rhinestones in its pieces. If you can't find a mark or are still uncertain, consult a certified appraiser or knowledgeable jeweler. Performing home tests for diamond authenticity can damage your jewelry, so getting a professional opinion is often the best way to protect your piece. Find a range of blue diamond jewelry on 1stDibs.

Are blue diamonds worth anything?

Yes, blue diamonds may be worth something. How much a particular gemstone is worth depends on its color, cut, clarity and size, measured in carats. Generally, naturally occurring blue diamonds are worth more than human-made synthetic ones. A certified appraiser or knowledgeable jeweler can inspect your loose gemstone or diamond jewelry and provide you with its estimated value. Explore a diverse assortment of blue diamond jewelry on 1stDibs.

Are Blue Nile diamonds legit?

Yes, Blue Nile diamonds are legit. The jewelry maker offers both natural diamonds sourced from mines and lab-created diamonds produced via controlled scientific techniques. Both types of diamonds are legitimate or genuine gemstones. Find a range of Blue Nile diamond jewelry on 1stDibs.

How much is a natural blue diamond worth?

The price of a natural blue diamond is determined first by the color and then its clarity. Depending on these factors and the size chosen, there is a huge variation in price. You will find the blue diamond price range from under $2,000 to over $10,000 on 1stDibs.

How much is a blue diamond ring worth?

A blue diamond ring worth depends on the type of blue diamond. Ideally, a blue diamond’s cost is based on its 4Cs (cut, color, clarity, and carat), with the intensity of the color being the dominant factor. A blue diamond ring price ranges between $6,800 to $11,200. On 1stDibs, you can find a range of exquisite antique and vintage blue diamond rings.

Does Blue Nile sell real diamonds?

Yes, Blue Nile sells real diamonds. Many of the jewelry maker's pieces feature natural diamonds. Others are set with lab-created diamonds, which are real but are the result of processes performed in laboratories. On 1stDibs, explore a collection of Blue Nile diamond jewelry from some of the world's top sellers.

How much is a 1-carat blue diamond worth?

How much a 1-carat blue diamond is worth depends on its cut, clarity and color. Human-made synthetic blue diamonds of that size are often worth less than $10,000, while natural examples sourced through mining are generally valued at much higher prices. If a gemstone is set in a piece of jewelry, it may have additional value due to the precious metals, the maker of the piece, its age and other factors. Because so many variables can impact the potential value of a blue diamond, experts generally recommend having a certified appraiser or experienced jeweler assist with the valuation process. On 1stDibs, explore a diverse assortment of blue diamond jewelry.

Deep Blue Diamond

Vr Jewels Usa Inc

White Gold Blue Stone Ring

14k Gold Evil Eye Ring

8 Carat Gia Blue Sapphire

10 Carat Yellow Sapphire

Two Stone Pear Diamond Ring

Thailand Sapphire

Engagement Rings Belgium

Category

Vintage 1960s Brazilian Modern Brooches

Materials

Diamond, Sapphire, 18k Gold, White Gold

H. Stern Sapphire Diamond White Gold Brooch

$7,500

Art Deco Diamond and Sapphire Filigree Ring

Located in Montgomery, AL

sparkling white diamonds and two deep blue sapphire accents. The diamonds are old european cut and have a

Category

Early 20th Century Unknown Art Deco Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Art Deco Diamond and Sapphire Filigree Ring

$1,500

Aquamarine and Diamond Platinum Drop Earrings Estate Fine Jewelry

Located in Montreal, QC

. Each Drop Earring Hand set with alternating round and baguette Diamonds, suspending a pear shape deep

Category

21st Century and Contemporary Modern Drop Earrings

Materials

Aquamarine, Diamond, Platinum

Aquamarine and Diamond Platinum Drop Earrings Estate Fine Jewelry

$6,050

Cartier Lapis Lazuli Diamond Yellow Gold Band Ring

Located in Beverly Hills, CA

deep blue lapis lazuli, sparkling white diamonds and yellow gold! 18k yellow gold, diamond total

Category

Vintage 1970s French Cocktail Rings

Materials

Lapis Lazuli, Diamond, 18k Gold, Yellow Gold

Cartier Lapis Lazuli Diamond Yellow Gold Band Ring

$5,800

Vintage Sapphire and Diamond 18 Carat Gold Cluster Ring

Located in Chipping Campden, GB

. The deep blue sapphire measures 75pts. The total diamonds weight in this ring measures approximately

Category

Vintage 1970s Unknown Cluster Rings

Materials

Diamond, Sapphire, Gold

Vintage Sapphire and Diamond 18 Carat Gold Cluster Ring

$895

Antique Sapphire and Diamond Set Gold Flexible Snake Bracelet

Located in Litchfield, CT

body and a head set with a deep blue 1.25 carat sapphire and diamond eyes. Well-made, it may be worn in

Category

Antique 1880s Bangles

Materials

Diamond, Sapphire, 18k Gold

Antique Sapphire and Diamond Set Gold Flexible Snake Bracelet

$9,800

Viberant Sapphire Diamond 18K Ombre Link Tennis Bracelet

Located in Miami, FL

Ombre Blue Sapphire and Diamond Bracelet in 18K White Gold Indulge in the beauty of graduating

Category

21st Century and Contemporary American Modern Tennis Bracelets

Materials

Diamond, Sapphire, 18k Gold

Viberant Sapphire Diamond 18K Ombre Link Tennis Bracelet

$5,900

Late 20th Century Enamel Diamond Ring Circa 1990s

Located in ADELAIDE, SA

surrounds the centre gemstones. All highlighted by the deep blue enamelled background. Diamonds: Total

Category

Late 20th Century Modern Cocktail Rings

Materials

Diamond, 18k Gold, Enamel

Late 20th Century Enamel Diamond Ring Circa 1990s

$1,595

Diamond and Sapphire Art Deco Style Drop Earrings in 18K White Gold

Located in Bangkok, TH

deep blue sapphires and radiant diamonds creates a captivating contrast. Crafted with attention to

Category

21st Century and Contemporary Thai Art Deco Lever-Back Earrings

Materials

Diamond, Sapphire, 14k Gold, White Gold

Diamond and Sapphire Art Deco Style Drop Earrings in 18K White Gold

$8,900 / item

Patriotic Diamond, Ruby, and Sapphire American Flag Ring

Located in New York, NY

gold. The meticulously detailed flag design shimmers with round brilliant-cut diamonds, deep blue

Category

20th Century American Retro Fashion Rings

Materials

Diamond, Ruby, Sapphire, 18k Gold

Patriotic Diamond, Ruby, and Sapphire American Flag Ring

$17,500

Unique Sapphire Diamond 18 Karat Yellow Gold Estate Earrings

Located in San Francisco, CA

/4" high, and feature a comfortable and secure post with lever back design. Deep blue sapphires and

Category

Vintage 1970s Unknown Stud Earrings

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Unique Sapphire Diamond 18 Karat Yellow Gold Estate Earrings

$2,685

Art Nouveau Sapphire Ruby Diamond Gold Bangle Bracelet

Located in Narberth, PA

set stones, adding a colorful accent to the rich design. The gemstones include a deep blue sapphire, a

Category

Antique Late 19th Century Unknown Art Nouveau Bangles

Materials

Diamond, Ruby, Sapphire, 14k Gold

Art Nouveau Sapphire Ruby Diamond Gold Bangle Bracelet

$5,295

Pair of 1940s Sapphire Diamond Dress Clips

Located in Brisbane City, QLD

. Handcrafted from 14 karat yellow and white gold, the pair have been set with geometric sections of deep blue

Category

Mid-20th Century American Retro Brooches

Materials

Diamond, Sapphire, Gold, 14k Gold, White Gold, Yellow Gold

Pair of 1940s Sapphire Diamond Dress Clips

$14,550 / set

Edwardian 1.10ct Sapphire and Diamond Halo Ring, c.1910s

Located in London, GB

platinum and surrounded by a sparkling halo of old cut diamonds this deep blue sapphire really stands out

Category

Vintage 1910s Unknown Edwardian Cluster Rings

Materials

Diamond, Sapphire, 18k Gold, Platinum

Edwardian 1.10ct Sapphire and Diamond Halo Ring, c.1910s

$4,478

0.5 Carat Diamond and Sapphire Grand Filigree Bracelet

Located in Montgomery, AL

comprised of 23 individual links. Five of the links are adorned with a sparkling diamond and deep blue

Category

Early 20th Century Unknown Art Deco Link Bracelets

Materials

Diamond, Sapphire, 14k Gold, White Gold

0.5 Carat Diamond and Sapphire Grand Filigree Bracelet

$2,800

Retro Turquoise Diamond Lapis 18k Gold Statement Ring

Located in Beverly Hills, CA

turquoise accented with radiant diamond, deep blue lapis and an antique gold finish, this ring will be the

Category

Vintage 1970s Unknown Cocktail Rings

Materials

Diamond, Lapis Lazuli, Turquoise, Gold, 18k Gold, Yellow Gold, Platinum

Retro Turquoise Diamond Lapis 18k Gold Statement Ring

$6,500

earrings in 18 carat gold tanzanites and 0.14 carat diamonds

Located in Vannes, FR

deep blue of the tanzanite stones is softened by the light gray of the quartz. This duality will

Category

21st Century and Contemporary French Modern Drop Earrings

Materials

Diamond, Tanzanite, Gold

earrings in 18 carat gold tanzanites and 0.14 carat diamonds

$2,774 / set

Van Cleef Arpels Lapis Lazuli Diamond Yellow Gold Ring

Located in Beverly Hills, CA

combination of deep blue lapis lazuli, sparkling white diamonds and yellow gold! 18k yellow gold, diamond

Category

Vintage 1970s French Cocktail Rings

Materials

Diamond, Lapis Lazuli, 18k Gold, Base Metal, Yellow Gold

Van Cleef Arpels Lapis Lazuli Diamond Yellow Gold Ring

$6,200

26.79 Carat Oval Tanzanite and Diamonds Ring 18 Karat

Located in Miami, FL

purplish to blue color. The diamonds are 2 trillion cut diamonds with an approximate total weight of 1.90

Category

21st Century and Contemporary American Three-Stone Rings

Materials

Diamond, Tanzanite, 18k Gold, White Gold

26.79 Carat Oval Tanzanite and Diamonds Ring 18 Karat

$18,375

Victorian Sapphire Diamond 18K Yellow Gold Silver Cluster Ring

Located in Beverly Hills, CA

Center Stone: Sapphire Cut: Oval Cut Weight: Approximately 5 Carats Color: Deep Greenish Blue

Category

Antique 1890s Victorian Cocktail Rings

Materials

Diamond, Sapphire, Gold, 18k Gold, Yellow Gold, Silver

Victorian Sapphire Diamond 18K Yellow Gold Silver Cluster Ring

$5,750

Late Victorian Three-Stone Sapphire and Diamond Twist Ring, circa 1900s

Located in London, GB

A delicate three stone twist ring, showing off a beautiful deep blue sapphire, surrounded by to

Category

Antique Early 1900s Unknown Engagement Rings

Materials

Diamond, Sapphire, 18k Gold

Late Victorian Three-Stone Sapphire and Diamond Twist Ring, circa 1900s

$1,901

Art Deco GIA 2.89 carat diamond sapphire platinum engagement ring

Located in Beverly Hills, CA

An exquisite Art Deco platinum ring featuring a 2.89-carat old European cut diamond, framed by deep

Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Art Deco GIA 2.89 carat diamond sapphire platinum engagement ring

$27,500

LB Exclusive 14K White Gold Diamond and Sapphire Flower Pendant Necklace

By LB Exclusive

Located in Southampton, PA

” long and .38” wide. With petals crafted from deep blue sapphires and a single diamond at the center

Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Sapphire, White Gold

LB Exclusive 14K White Gold Diamond and Sapphire Flower Pendant Necklace

$353 / item

Contemporary 4.00 Total Carat Diamond and French Cut Sapphire Eternity Band

Located in Narberth, PA

rich, deep blue color. The diamonds weigh approximately 1.50ctw combined, sparkling beautifully as they

Category

21st Century and Contemporary Contemporary Band Rings

Materials

Diamond, Sapphire, Platinum

Contemporary 4.00 Total Carat Diamond and French Cut Sapphire Eternity Band

$5,995

Regal 2.72ct Sapphire and Diamonds Drop Earrings in 18k White Gold

Located in רמת גן, IL

elegance and sophistication, these 18k white gold drop earrings feature two mesmerizing oval-cut deep blue

Category

2010s Israeli Drop Earrings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Regal 2.72ct Sapphire and Diamonds Drop Earrings in 18k White Gold

$2,146

Tiffany Co. Art Nouveau Ruby Sapphire Diamond and 18 Karat Gold Cufflinks

By Tiffany Co.

Located in New York City, NY

feature high grade diamonds, deep blue sapphire and rich red ruby. Hallmarks: Tiffany & Co.

Category

Antique Late 19th Century Cufflinks

Materials

Diamond, Ruby, Sapphire, 18k Gold

Tiffany Co. Art Nouveau Ruby Sapphire Diamond and 18 Karat Gold Cufflinks

$6,500

Antique Art Deco Plat Sapphire Diamond Filigree Scroll Work Pendant Necklace

Located in Montclair, NJ

--Stone(s):-- (2) Synthetic Sapphires - Square French Cut - Bezel Set - Deep Blue Color (4

Category

Vintage 1920s Art Deco Pendant Necklaces

Materials

Diamond, Sapphire, Platinum

Antique Art Deco Plat Sapphire Diamond Filigree Scroll Work Pendant Necklace

$1,647

Antique Edwardian 16k Yellow Gold Sapphire and Diamond Five Stone Ring

Located in New York, NY

handmade prong setting. The sapphires exhibit a deep, rich blue hue, while the diamonds are brilliant and

Category

Antique Late 19th Century Edwardian Band Rings

Materials

Diamond, Sapphire, 15k Gold

Antique Edwardian 16k Yellow Gold Sapphire and Diamond Five Stone Ring

$4,010

Vintage Oscar Heyman Necklace Sapphire Diamond Platinum Bracelet Pair Estate

By Oscar Heyman

Located in Beverly Hills, CA

. The necklace design follows a classic tennis style arrangement, with deep blue sapphires and bright

Category

Vintage 1960s American More Necklaces

Materials

Diamond, Sapphire, Platinum

Vintage Oscar Heyman Necklace Sapphire Diamond Platinum Bracelet Pair Estate

$92,000

Luminous 2.40ct Sapphire and Diamonds Cluster Ring in 14k White Gold

Located in רמת גן, IL

blend of deep blue sapphires and brilliant diamonds, offering a timeless addition to any jewelry

Category

2010s Israeli Cluster Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

Luminous 2.40ct Sapphire and Diamonds Cluster Ring in 14k White Gold

$1,010

Antique Art Deco Platinum 1.54ct Diamond French Sapphire Ribbon Engagement Ring

Located in Montclair, NJ

- Deep Blue Color (1) Natural Genuine Diamond - Old European Cut - Prong Set - J Color - VS2 Clarity

Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Antique Art Deco Platinum 1.54ct Diamond French Sapphire Ribbon Engagement Ring

$12,083

18K White Gold 0.22ct Diamond and Sapphire Dolphin Ring MF08-072325

By LB Exclusive

Located in Southampton, PA

marine creation is detailed with 0.22 carats of diamonds and deep blue sapphires. With its mix of shimmer

Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

18K White Gold 0.22ct Diamond and Sapphire Dolphin Ring MF08-072325

$2,100

2.75 Carat Aquamarine Pear Shape Diamond Halo Ring - 14K White Gold

Located in Los Angeles, CA

, 2.75 carats (12 x 7.7 mm), deep blue hue, clean clarity – Halo Diamonds: 14 Round Brilliant Cuts, ~1.00

Category

Vintage 1970s Artisan Cocktail Rings

Materials

Aquamarine, Diamond, 14k Gold, White Gold

2.75 Carat Aquamarine Pear Shape Diamond Halo Ring - 14K White Gold

$3,700

Diana 14k White Gold 1.50ct Diamond and Sapphire Hoop Earrings DI23-070125

Located in Southampton, PA

In these dazzling inside-out hoop earrings, brilliant white diamonds are paired with deep blue

Category

21st Century and Contemporary Hoop Earrings

Materials

Diamond, Sapphire, 14k Gold, White Gold

Diana 14k White Gold 1.50ct Diamond and Sapphire Hoop Earrings DI23-070125

$2,100

Art Deco Inspired Diamond and Sapphire Target Engagement Ring Set in Platinum

Located in London, England

weight of 0.65 carats. These sapphire are a royal deep blue colour. The diamonds in the shoulders add an

Category

2010s Unknown Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Inspired Diamond and Sapphire Target Engagement Ring Set in Platinum

$12,788

Exquisite 0.04ct Sapphire Faberge Watch w/ Natural Diamonds in 18K Yellow Gold

Located in רמת גן, IL

and VVS in clarity. The combination of the deep blue sapphire and the sparkling diamonds against the

Category

2010s Singaporean Wrist Watches

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Exquisite 0.04ct Sapphire Faberge Watch w/ Natural Diamonds in 18K Yellow Gold

$4,354

Magnificent Oval Brilliant Sapphire Ring with Side Diamonds in 18K White Gold

Located in רמת גן, IL

deep blue allure and the diamonds' fiery dance. The size EU55 fit with adjustable capabilities (up to 3

Category

2010s Israeli Cocktail Rings

Materials

Diamond, Sapphire, White Gold

Magnificent Oval Brilliant Sapphire Ring with Side Diamonds in 18K White Gold

$2,248

Sapphires Diamonds 18 Karat White And Yellow Gold Cocktail Ring

Located in Marcianise, IT

side stones that provide a striking contrast with their deep blue hues. The central diamond is the

Category

1990s Italian Artisan Cocktail Rings

Materials

Sapphire, Diamond, Yellow Gold, White Gold, 18k Gold

Sapphires Diamonds 18 Karat White And Yellow Gold Cocktail Ring

$8,408

Mid Century Diamond Sapphire 18 Karat Yellow Gold Platinum Branch Brooch

Located in Beverly Hills, CA

magnificent F color round radiant diamonds and deep blue radiant sapphires; this branch brooch will capture

Category

Vintage 1960s Unknown Brooches

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold, Platinum

Mid Century Diamond Sapphire 18 Karat Yellow Gold Platinum Branch Brooch

$2,500

MODERN Tahitian Black-Gray Pearls Necklace In 18Kt Gold With VS Diamonds

Located in Miami, FL

-purples and deep blacks. Diamonds: Mount in a pave setting, with 8 round brilliant cut diamonds, 0.48

Category

20th Century Italian Modernist Drop Necklaces

Materials

Diamond, Black Pearl, White Diamond, Pearl, Gold, Yellow Gold, 18k Gold

MODERN Tahitian Black-Gray Pearls Necklace In 18Kt Gold With VS Diamonds

$9,500

Old Polish Golden Ring with Big Synthetic Sapphire and Diamonds total 0.65ct

Located in Chorzów, PL

An old Polish ring with a centrally mounted large synthetic sapphire of a beautiful deep blue color

Category

Vintage 1960s Polish Belle Époque Cocktail Rings

Materials

Diamond, 14k Gold

Old Polish Golden Ring with Big Synthetic Sapphire and Diamonds total 0.65ct

$1,741

Antique Victorian 14 Karat Yellow Gold Diamond and Sapphire Double Snake Ring

Located in Great Neck, NY

Victorian double snake ring has deep blue sapphire and white diamonds with two intertwining snakes. A very

Category

Antique 1890s Victorian Cocktail Rings

Materials

Diamond, Sapphire, Yellow Gold

Antique Victorian 14 Karat Yellow Gold Diamond and Sapphire Double Snake Ring

$2,450

Vintage 14k Gold Sapphire and Diamond Halo Arthritic Shanked Gemstone Ring

Located in Addison, TX

crown is a vibrant single round cut diamond halo, giving an effortless contrast to the deep blue green

Category

1990s Unknown Modern Cocktail Rings

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

Vintage 14k Gold Sapphire and Diamond Halo Arthritic Shanked Gemstone Ring

$1,200

Elegant Van Cleef Arpels Earclips in 18K Gold with Sapphires and Diamonds

By Van Cleef Arpels

Located in Lucerne, CH

alluring square-shaped sapphire with total weight of 4.00 carats. The bright sparks of diamonds and deep

Category

Mid-20th Century French Modern Clip-on Earrings

Materials

Diamond, Sapphire, Gold, 18k Gold

Elegant Van Cleef Arpels Earclips in 18K Gold with Sapphires and Diamonds

$18,500

Art Deco 4.50 Total Carat Sapphire and 2.88 Total Carat Diamond Link Bracelet

Located in Narberth, PA

Cut sapphires are channel set, exhibiting a luscious deep blue hue. Collectively, the diamonds have a

Category

Vintage 1920s Unknown Art Deco Link Bracelets

Materials

Diamond, Sapphire, Platinum

Art Deco 4.50 Total Carat Sapphire and 2.88 Total Carat Diamond Link Bracelet

$8,995

Old golden ring with synthetic sapphire and diamonds, Poland, I half of XX centu

Located in Chorzów, PL

An old Polish ring with a centrally mounted large synthetic sapphire of a beautiful deep blue color

Category

Vintage 1930s Polish Cocktail Rings

Materials

Diamond, Sapphire, 14k Gold

Old golden ring with synthetic sapphire and diamonds, Poland, I half of XX centu

$2,342

Majestic 18k White Gold Cushion Sapphire and Diamond Halo Ring w/2.21 ct - IGI

Located in רמת גן, IL

the serene elegance of this 18k White Gold Halo Ring that captivates with its deep blue allure and

Category

2010s Israeli Cluster Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Majestic 18k White Gold Cushion Sapphire and Diamond Halo Ring w/2.21 ct - IGI

$3,030

Carved Moonstone Face Ring With Diamonds and Sapphires in 18K Yellow Gold

Located in Fairfield, CT

stone's creamy luster with its warm sheen. Encircling the moonstone face is a halo of deep blue sapphires

Category

Late 20th Century Artisan Cocktail Rings

Materials

Diamond, Moonstone, Sapphire, Gold, 18k Gold, Yellow Gold

Carved Moonstone Face Ring With Diamonds and Sapphires in 18K Yellow Gold

$3,040

Petite Sapphire Flower Birthstone Ring with Diamond and Filigree, 10k Gold LV

By Five Star Jewelry

Located in Austin, TX

contrasting deep blue sapphires around a bright white diamond. Graceful scroll filigree adds to the floral

Category

21st Century and Contemporary American Modern Fashion Rings

Materials

Sapphire, Diamond, 10k Gold, Yellow Gold, White Gold

Petite Sapphire Flower Birthstone Ring with Diamond and Filigree, 10k Gold LV

$795

.72 Ct. Marquise Diamond Sapphire Art Deco Style Engagement Ring in 18K Gold

Located in Bangkok, TH

design. The bold contrast between the deep blue sapphires and the sparkling diamonds enhances the central

Category

21st Century and Contemporary Thai Art Deco Engagement Rings

Materials

Diamond, Sapphire, Gold, 18k Gold, White Gold

.72 Ct. Marquise Diamond Sapphire Art Deco Style Engagement Ring in 18K Gold

$6,200

0.54ctw Sapphire Diamond Toi et Moi Ring, 18K Yellow Gold, Ring Size 6.5, Simple

Located in McLeansville, NC

and a round diamond, both set in 18k yellow gold. The contrast between the deep blue sapphire and the

Category

2010s Engagement Rings

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

0.54ctw Sapphire Diamond Toi et Moi Ring, 18K Yellow Gold, Ring Size 6.5, Simple

$375

Modern G. Verdi Multicolored Rose Cut Sapphire and Diamond Ring in 18 Karat Gold

By Verdi

Located in Fairfield, CT

white diamonds, totaling 2.76 carats, which add a radiant contrast to the deep blue. The diamonds bring

Category

21st Century and Contemporary Italian Modern Cluster Rings

Materials

Diamond, Sapphire, Gold, 18k Gold, Rose Gold

Modern G. Verdi Multicolored Rose Cut Sapphire and Diamond Ring in 18 Karat Gold

$7,500

Art Deco 18 Karat White Gold Diamond and Sapphire Cabochon Marquee Style Ring

Located in Addison, TX

deep blue sapphire cabochon and a diamond in a marquee style arrangement. The hue of the sapphire

Category

Vintage 1920s Unknown Art Deco Fashion Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Art Deco 18 Karat White Gold Diamond and Sapphire Cabochon Marquee Style Ring

$800

14 Karat Yellow Gold Diamond and Sapphire Ring

Located in Washington Depot, CT

ring is set with two round brilliant diamonds and one larger deep blue genuine sapphire. Round

Category

20th Century More Rings

Materials

Sapphire, Yellow Gold

14 Karat Yellow Gold Diamond and Sapphire Ring

$985

Maharaja 70 Carat Fancy Cut Sapphire Bangle Bracelet

By Mehnaz Durrani

Located in Richmond, BC

Maharaja inspired sapphire diamond bangle. Handcrafted, deep royal blue, 70 carats oval, fancy rose

Category

21st Century and Contemporary Canadian Contemporary Bangles

Materials

Diamond, Blue Sapphire, Gold Plate, Silver

Maharaja 70 Carat Fancy Cut Sapphire Bangle Bracelet

$3,600

Tanzanite 14k Gold Ring Genuine Tanzanite Ring Certified Tanzanite Ring

By Daizy Jewellery

Located in Istanbul, TR

stone natural tanzanite 3.24 ct. Certificate MSU: D-287548 Cut: oval Color: deep violetish blue Clarity

Category

2010s Turkish Modern Engagement Rings

Materials

Diamond, Emerald, Blue Sapphire, Tanzanite, 14k Gold

Tanzanite 14k Gold Ring Genuine Tanzanite Ring Certified Tanzanite Ring

$3,200

Tanzanite 14k Gold Ring Genuine Tanzanite Ring Certified Tanzanite Ring

By Daizy Jewellery

Located in Istanbul, TR

stone natural tanzanite 3.24 ct. Certificate MSU: D-287548 Cut: oval Color: deep violetish blue Clarity

Category

2010s Turkish Modern Engagement Rings

Materials

Diamond, Emerald, Blue Sapphire, Tanzanite, 14k Gold

Tanzanite 14k Gold Ring Genuine Tanzanite Ring Certified Tanzanite Ring

$1,600

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Deep Blue Diamond For Sale on 1stDibs

On 1stDibs, you can find the most appropriate deep blue diamond for your needs in our varied inventory. Frequently made of gold, white gold and 18k gold, this item was constructed with great care. Find an antique version now, or shop for 412 vintage or 493 modern creation for a more contemporary example of these cherished accessories. Making the right choice when shopping for a deep blue diamond may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 18th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. As it relates to this specific piece, our collection includes designs that are universally popular, but .5 carat and 1 carat carat weights, specifically, are sought with frequency. Creating a deep blue diamond has been a part of the legacy of many jewelers, but those produced by Le Vian, VR Jewels and Gems and Jewels UK are consistently popular. While most can agree that any deep blue diamond from our collection can easily elevate most outfits, but the choice of a diamond version from the 688 available is guaranteed to add a special touch to your ensemble. An oval cut version of this piece has appeal, but there are also round cut and brilliant cut versions for sale. Most of our deep blue diamond for sale are for women, but there are 249 pieces available to browse for men.

How Much is a Deep Blue Diamond?

Prices for a deep blue diamond can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $1 and can go as high as $11,800,000, while this accessory, on average, fetches $4,344.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement rings, vintage engagement rings or Art Deco engagement rings.

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.

Questions About Deep Blue Diamond

Is a blue diamond a real diamond?
1 Answer
1stDibs ExpertAugust 17, 2021
Yes, a blue diamond is a real diamond. Contrary to popular belief, diamonds come in an array of colors aside from clear. Blue diamonds are neither color-treated nor enhanced to deliver the icy shade, which can range from a seafoam green to a royal blue.
Are there blue-green diamonds?
1 Answer
1stDibs ExpertApril 5, 2022
Yes, there are blue-green diamonds. However, natural ones are very rare, so most are man-made. The Dresden Green is the most famous example of a genuine blue-green diamond gemstone. You can find a wide selection of diamond gemstone jewelry on 1stDibs.
What is a blue diamond worth?
1 Answer
1stDibs ExpertFebruary 22, 2021
A light blue 0.5 carat diamond is worth roughly $26,280 on average. A deep blue 0.25 diamond, costs $75,000 on average. Blue diamonds are the rarest color of diamond, only found in three areas of the world: Australia, South Africa, and India. The deeper the blue diamonds are even more rare and therefore more expensive.
Are Blue Nile diamonds real diamonds?
1 Answer
1stDibs ExpertAugust 26, 2024
Yes, Blue Nile diamonds are real diamonds. The luxury jewelry maker uses natural diamonds ethically sourced from mines for many of its pieces. In addition, Blue Nile offers an assortment of lab-created diamond rings, earrings, necklaces and bracelets. Lab-created diamonds are still real, but they are human-made rather than mined. On 1stDibs, find an assortment of Blue Nile diamond jewelry.
How can I tell if my blue diamond is real?
1 Answer
1stDibs ExpertAugust 29, 2024
To tell if your blue diamond is real, look for a maker's mark on your piece. By researching the manufacturer using trusted online resources, you can find out if the jewelry maker tends to use authentic gemstones or rhinestones in its pieces. If you can't find a mark or are still uncertain, consult a certified appraiser or knowledgeable jeweler. Performing home tests for diamond authenticity can damage your jewelry, so getting a professional opinion is often the best way to protect your piece. Find a range of blue diamond jewelry on 1stDibs.
Are blue diamonds worth anything?
1 Answer
1stDibs ExpertSeptember 16, 2024
Yes, blue diamonds may be worth something. How much a particular gemstone is worth depends on its color, cut, clarity and size, measured in carats. Generally, naturally occurring blue diamonds are worth more than human-made synthetic ones. A certified appraiser or knowledgeable jeweler can inspect your loose gemstone or diamond jewelry and provide you with its estimated value. Explore a diverse assortment of blue diamond jewelry on 1stDibs.
Are Blue Nile diamonds legit?
1 Answer
1stDibs ExpertApril 22, 2024
Yes, Blue Nile diamonds are legit. The jewelry maker offers both natural diamonds sourced from mines and lab-created diamonds produced via controlled scientific techniques. Both types of diamonds are legitimate or genuine gemstones. Find a range of Blue Nile diamond jewelry on 1stDibs.
How much is a natural blue diamond worth?
1 Answer
1stDibs ExpertOctober 5, 2021
The price of a natural blue diamond is determined first by the color and then its clarity. Depending on these factors and the size chosen, there is a huge variation in price. You will find the blue diamond price range from under $2,000 to over $10,000 on 1stDibs.
How much is a blue diamond ring worth?
1 Answer
1stDibs ExpertOctober 5, 2021
A blue diamond ring worth depends on the type of blue diamond. Ideally, a blue diamond’s cost is based on its 4Cs (cut, color, clarity, and carat), with the intensity of the color being the dominant factor. A blue diamond ring price ranges between $6,800 to $11,200. On 1stDibs, you can find a range of exquisite antique and vintage blue diamond rings.
Does Blue Nile sell real diamonds?
1 Answer
1stDibs ExpertMay 30, 2024
Yes, Blue Nile sells real diamonds. Many of the jewelry maker's pieces feature natural diamonds. Others are set with lab-created diamonds, which are real but are the result of processes performed in laboratories. On 1stDibs, explore a collection of Blue Nile diamond jewelry from some of the world's top sellers.
How much is a 1-carat blue diamond worth?
1 Answer
1stDibs ExpertSeptember 16, 2024
How much a 1-carat blue diamond is worth depends on its cut, clarity and color. Human-made synthetic blue diamonds of that size are often worth less than $10,000, while natural examples sourced through mining are generally valued at much higher prices. If a gemstone is set in a piece of jewelry, it may have additional value due to the precious metals, the maker of the piece, its age and other factors. Because so many variables can impact the potential value of a blue diamond, experts generally recommend having a certified appraiser or experienced jeweler assist with the valuation process. On 1stDibs, explore a diverse assortment of blue diamond jewelry.