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.

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 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.

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 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 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 1930s Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Art Deco GIA .94 carat diamond sapphire platinum filagree ring

$6,500

18 Karat Yellow Gold Playing Dice Lapis Lazuli Diamonds Cufflinks

By AVGVSTA

Located in Milano, IT

face is shaped as a cube with its striking deep blue surface its highlighted by diamonds to recreate

Category

2010s Italian Cufflinks

Materials

Agate, Diamond, White Diamond, 18k Gold, Yellow Gold, Gold

18 Karat Yellow Gold Playing Dice Lapis Lazuli Diamonds Cufflinks

$4,559

Nina Zhou 6.55ctw Aquamarine Sapphire Diamond Chandelier Drop Earrings

By Nina Zhou

Located in Rowland Heights, CA

aquamarines, glittering diamonds, and deep blue sapphires—each stone carefully set in 14k yellow gold to

Category

21st Century and Contemporary American Modern Chandelier Earrings

Materials

Sapphire, Diamond, Aquamarine, Yellow Gold, 14k Gold

Nina Zhou 6.55ctw Aquamarine Sapphire Diamond Chandelier Drop Earrings

$1,680 / set

Art Deco Platinum Ring with Old Cut Diamonds and Sapphires

Located in MONTMORENCY, FR

the ring, adding brilliance and depth to the design. The combination of white diamonds and deep blue

Category

Early 20th Century French Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Platinum Ring with Old Cut Diamonds and Sapphires

$4,319

18k Gold Sapphire and Diamond Earrings

Located in Scottsdale, AZ

. Sapphires are round and sizing is 2.6-3.00mm each in a beautiful deep dark blue 5 ctw total Diamonds are

Category

Vintage 1970s Italian Art Deco Clip-on Earrings

Materials

Diamond, Sapphire, 18k Gold

18k Gold Sapphire and Diamond Earrings

$7,875

Vintage 18K Yellow Gold Diamond and Sapphire Wave Necklace

Located in Great Neck Plaza, NY

, brilliant-cut diamonds, and deep blue round sapphires. The necklace is set with approximately 119 brilliant

Category

Vintage 1980s Choker Necklaces

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Vintage 18K Yellow Gold Diamond and Sapphire Wave Necklace

$37,000

14K Yellow Gold Ring with Diamonds and Sapphires

Located in Berlin, DE

Refined Brilliance – 14K Yellow Gold Ring with Diamonds and Deep Blue Sapphires This exceptionally

Category

21st Century and Contemporary Unknown Modern Fashion Rings

Materials

Diamond, Sapphire, Yellow Gold

14K Yellow Gold Ring with Diamonds and Sapphires

$899

8.5 Carat Diamond and Sapphire Eternity Band Ring

By Gems Paradise

Located in Jaipur, IN

alternating radiant diamonds and deep blue sapphires, each gem set in a precision-engineered, shared-prong

Category

2010s Armenian Contemporary Band Rings

Materials

Diamond, Sapphire, Silver

8.5 Carat Diamond and Sapphire Eternity Band Ring

$2,990

18ct White Gold Earrings Set With Marquise Sapphires 12 Diamonds

Located in London, GB

round brilliant cut diamonds on each earring. The striking contrast between the deep blue sapphires and

Category

2010s Stud Earrings

Materials

Diamond, Sapphire, 18k Gold, White Gold

18ct White Gold Earrings Set With Marquise Sapphires 12 Diamonds

$543 / set

Natural Multi sapphire Diamond Necklace in 18k Gold

Located in jaipur, IN

deep blue sapphires. Set in sleek white gold, the piece exudes sophistication and subtle luxury. The

Category

2010s Indian Link Necklaces

Materials

Diamond, Sapphire, 18k Gold

Natural Multi sapphire Diamond Necklace in 18k Gold

$10,100

14CT White Gold Sapphire And Diamond Cocktail Ring

Located in Sydney, NSW

-three baguette-cut deep velvety blue hue Sapphires nestled between twenty-six round brilliant-cut

Category

2010s Art Deco Fashion Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

14CT White Gold Sapphire And Diamond Cocktail Ring

$13,890

18K Yellow Gold Diamond, Sapphire and Green Emerald Bracelet

Located in New York, NY

with gems: brilliant white diamonds, deep blue sapphires, and lush green emeralds. The combination of

Category

20th Century American Modern Retro Bracelets

Materials

Diamond, Emerald, Sapphire, 18k Gold, Yellow Gold

18K Yellow Gold Diamond, Sapphire and Green Emerald Bracelet

$53,650

Aquamarine Sapphire Chandelier Earrings With Pave Diamonds In 18k White Gold

By Artisan NYC

Located in New York, NY

Stones Natural Emerald-Cut Aquamarines (14.85 ct) Accent Stones Deep Blue Sapphires (2.06 ct) Diamond

Category

21st Century and Contemporary Indian Art Deco Dangle Earrings

Materials

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

Aquamarine Sapphire Chandelier Earrings With Pave Diamonds In 18k White Gold

$13,825

18K White Gold Ring with Pearl, Diamonds, and Sapphires

Located in Bergamo, BG

round-cut diamonds and deep blue sapphires. The intricate design combines 0.78 carats of brilliant-cut

Category

21st Century and Contemporary Italian Fashion Rings

Materials

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

18K White Gold Ring with Pearl, Diamonds, and Sapphires

$8,279

18K White Gold Sapphire, Garnet Tsavorite and Diamond Floral Pendant Necklace

Located in New York, NY

gold, this piece features deep blue sapphires, sparkling diamonds, bright green tsavorite garnets, and

Category

21st Century and Contemporary Pendant Necklaces

Materials

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

18K White Gold Sapphire, Garnet Tsavorite and Diamond Floral Pendant Necklace

$1,500

14k Yellow Gold Diamond and Natural Sapphire Ring

Located in Washington Depot, CT

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

Category

20th Century Cocktail Rings

Materials

Diamond, Sapphire, Yellow Gold

14k Yellow Gold Diamond and Natural Sapphire Ring

$1,074

Art Deco style 1.06 carat diamond sapphire platinum ring

Located in Beverly Hills, CA

diamond, framed by old European cut diamonds and deep blue calibre cut sapphires for timeless vintage

Category

1990s Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Art Deco style 1.06 carat diamond sapphire platinum ring

$12,500

18K Yellow Gold Sapphire Ring with Diamonds

By Althoff Jewelry

Located in Hong Kong, HK

blue sapphires and sparkling diamonds, this ring showcases the perfect blend of elegance and natural

Category

21st Century and Contemporary Hong Kong Modern Fashion Rings

Materials

Diamond, Sapphire, Yellow Gold

18K Yellow Gold Sapphire Ring with Diamonds

$2,040 Sale Price

20% Off

Retro Platinum Ring with Diamonds and Sapphire

Located in Esch sur Alzette, Esch-sur-Alzette

, diamonds, and sapphire creates a stunning contrast between the bright white metal and the deep blue

Category

Mid-20th Century French Retro Fashion Rings

Materials

Diamond, Sapphire, Platinum

Retro Platinum Ring with Diamonds and Sapphire

$1,619

14K Yellow Gold Cabochon Sapphire and Diamond Halo Ring

By OGI Ltd

Located in New York, NY

deep blue against the fire of diamonds creates a striking presence that feels both classic and

Category

2010s American Modern Cluster Rings

Materials

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

14K Yellow Gold Cabochon Sapphire and Diamond Halo Ring

$1,960

Art Deco GIA 1.90 carat Asscher cut diamond sapphire platinum engagement ring

Located in Beverly Hills, CA

. Vibrant French cut sapphires form a striking geometric frame, their deep blue hue enhancing the diamond

Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Art Deco GIA 1.90 carat Asscher cut diamond sapphire platinum engagement ring

$27,000

Beautiful 3.37 Carat Sapphire and Baguette Diamond Earrings

By Hakimi s Gem

Located in Chicago, IL

These stunning earrings showcase the perfect balance of deep blue sapphires and sparkling diamonds

Category

21st Century and Contemporary Hoop Earrings

Materials

Diamond, Sapphire, 18k Gold

Beautiful 3.37 Carat Sapphire and Baguette Diamond Earrings

$3,600

Art Deco 14k Sapphire, Diamond, and Enamel Drop Earrings

Located in Narberth, PA

a stunning deep blue color, which wonderfully complements the yellow gold accents of the earrings

Category

Vintage 1930s Art Deco Drop Earrings

Materials

Diamond, Sapphire, Gold, 14k Gold, Yellow Gold, Enamel

Art Deco 14k Sapphire, Diamond, and Enamel Drop Earrings

$3,950

2.5ct baguette princess cut diamonds sapphire cocktail ring in 18k gold

By LÖF

Located in Los Angeles, CA

in 18k yellow gold. Alternating stripes of deep blue sapphires and diamonds (TW totaling a little

Category

2010s American Art Deco Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold

2.5ct baguette princess cut diamonds sapphire cocktail ring in 18k gold

$20,000 / item

18ct Gold, Birmingham Hallmarked, Victorian Sapphire Diamond Five Stone Ring

Located in Brighton, GB

is claw-set into the band, flush with the surface. The sapphires are deep blue; the diamonds are

Category

Antique Late 19th Century English Victorian Band Rings

Materials

Diamond, Sapphire, Gold, 18k Gold

18ct Gold, Birmingham Hallmarked, Victorian Sapphire Diamond Five Stone Ring

$757

18K White Gold Santa Maria Aquamarine Diamond Ring

By MOISEIKIN

Located in Hong Kong, HK

Aquamarine, deep blue 1.0 cts 18 Diamond 0.083 cts Matching earrings are available

Category

2010s Thai Contemporary Fashion Rings

Materials

Aquamarine, Diamond, 18k Gold, White Gold

18K White Gold Santa Maria Aquamarine Diamond Ring

$2,100

Vintage 18k Yellow Gold Diamond and Sapphire Channel Set Link Bracelet

Located in New York, NY

alternating with brilliant diamonds and deep blue sapphires. The sleek, polished links give it a timeless and

Category

20th Century Link Bracelets

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Vintage 18k Yellow Gold Diamond and Sapphire Channel Set Link Bracelet

$4,790

Levian Tanzanite Diamond Ring Halo 18k Yellow Gold Oval 7.3g sz 7

Located in Northbrook, IL

vibrant tanzanite, enhancing its allure. The combination of the deep blue tanzanite and sparkling diamonds

Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Tanzanite, 18k Gold, Yellow Gold

Levian Tanzanite Diamond Ring Halo 18k Yellow Gold Oval 7.3g sz 7

$1,995

Nina Zhou 2.90 ctw Sapphire Diamond Butterfly Pendant Necklace

By Nina Zhou

Located in Rowland Heights, CA

a deep, celestial blue, while the diamonds add a touch of brilliance, capturing light with every

Category

21st Century and Contemporary American Modern Pendant Necklaces

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

Nina Zhou 2.90 ctw Sapphire Diamond Butterfly Pendant Necklace

$1,620

18K White Gold Diamond and Pear Cut Sapphire Flowing Casade Earrings

Located in New York, NY

ocean waves, with shimmering diamonds and deep blue sapphires cascading in an elegant, fluid design

Category

21st Century and Contemporary Drop Earrings

Materials

Diamond, Sapphire, 18k Gold

18K White Gold Diamond and Pear Cut Sapphire Flowing Casade Earrings

$7,900

Men s 0.35ct Sapphire and Diamond Wedding Band in 14k White Gold 8.5mm

By Mark Broumand

Located in Los Angeles, CA

delicate milgrain detailing and high-polish edges. Alternating round brilliant cut white diamonds and deep

Category

21st Century and Contemporary American Contemporary Wedding Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

Men s 0.35ct Sapphire and Diamond Wedding Band in 14k White Gold 8.5mm

$2,750

1.40 ct GIA-Certified Diamond and Sapphire Stud Earrings in 18k White Gold

Located in Chicago, IL

carats combining brilliant-cut diamonds and deep-blue sapphires. Designed in an Art Deco halo motif

Category

2010s American Art Deco Stud Earrings

Materials

Diamond, Sapphire, White Gold

1.40 ct GIA-Certified Diamond and Sapphire Stud Earrings in 18k White Gold

$11,200 Sale Price

20% Off

Kern Jewelry Set Gold Turquoise Cabochon Sapphire Diamond

Located in Beverly Hills, CA

single cut diamonds, punctuated by round faceted sapphires in deep blue. The diamonds are set to follow

Category

Vintage 1970s Unknown Cocktail Rings

Materials

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

Kern Jewelry Set Gold Turquoise Cabochon Sapphire Diamond

$16,500 / set

Pear shape Sapphire and Diamond Necklace in 18K Yellow Gold

Located in beverly hills, CA

, deep blue color. The diamonds, estimated to weigh a total of 0.40 carat, are securely set in 4-prong

Category

Vintage 1980s Drop Necklaces

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Pear shape Sapphire and Diamond Necklace in 18K Yellow Gold

$5,800

Classic 14K Gold Sapphire Halo Ring with Diamond Accents

Located in New York, NY

center, surrounded by a halo of sparkling diamonds. The deep blue of the sapphire is beautifully

Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

Classic 14K Gold Sapphire Halo Ring with Diamond Accents

$959 Sale Price

20% Off

ITALIAN 1960 Cluster Cocktail Ring In 14Kt With Coral Lapis Turquoise Diamonds

Located in Miami, FL

symmetric and is embellished with thirty-five natural gemstones, such white colorless diamonds, deep blue

Category

Vintage 1960s Italian Modernist Cocktail Rings

Materials

Coral, Diamond, Lapis Lazuli, Turquoise, White Diamond, Gold, Yellow Gol...

ITALIAN 1960 Cluster Cocktail Ring In 14Kt With Coral Lapis Turquoise Diamonds

$7,188 Sale Price

20% Off

White Gold Eternity Ring with Sapphires and Diamonds – Contemporary Design

Located in Lisboa, PT

alternating sequence of deep blue sapphires and brilliant-cut diamonds. This refined design offers a

Category

Late 20th Century European Revival Engagement Rings

Materials

Diamond, Sapphire, White Gold

White Gold Eternity Ring with Sapphires and Diamonds – Contemporary Design

$1,319

Edwardian 0.75ct Sapphire and Diamond Trilogy Ring, c.1910s

Located in London, GB

Crafted in the 1910s, is this gorgeous Edwardian trilogy ring features a deep blue sapphire flanked

Category

Vintage 1910s British Edwardian Three-Stone Rings

Materials

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

Edwardian 0.75ct Sapphire and Diamond Trilogy Ring, c.1910s

$3,551

Vintage Sapphire and Diamond 18 Carat Gold Eternity Band

Located in Chipping Campden, GB

Set within this 18ct gold band there are nine deep blue sapphires and nine sparkling diamonds. The

Category

Vintage 1950s British Band Rings

Materials

Diamond, Sapphire, Gold

Vintage Sapphire and Diamond 18 Carat Gold Eternity Band

$1,073

Vintage 18KT Yellow Gold Lapis Lazuli, Turquoise, and Diamond Floral Earrings

Located in New York, NY

for distinction. Metal: 18KT yellow gold Stones: Lapis lazuli (deep blue) & turquoise (light blue

Category

Late 20th Century Clip-on Earrings

Materials

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

Vintage 18KT Yellow Gold Lapis Lazuli, Turquoise, and Diamond Floral Earrings

$5,340

Art Deco Style 12 Carat Cabochon Sapphire Diamond 18K Gold Bracelet

Located in Miami, FL

Color: Deep Blue Accent Stone Details: Gemstone: Diamond Total Carat Weight: Approximately 5 carats Cut

Category

Vintage 1930s Art Deco Link Bracelets

Materials

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

Art Deco Style 12 Carat Cabochon Sapphire Diamond 18K Gold Bracelet

$19,976 Sale Price

20% Off

18k Yellow Gold Ring with Square-Cut Sapphires and White Diamonds

Located in Bergamo, BG

pavé of white diamonds, weighing a total of 0.44 carats. The combination of deep blue sapphires and

Category

20th Century Italian Fashion Rings

Materials

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

18k Yellow Gold Ring with Square-Cut Sapphires and White Diamonds

$2,303 Sale Price

20% Off

David Webb 18K Gold Lapis-Lazuli With Diamond Clip-On Earrings.

By David Webb

Located in Great Neck Plaza, NY

glow with E color and VVS1 clarity, ensuring a brilliant sparkle. Complementing the diamonds are deep

Category

Vintage 1970s Drop Earrings

Materials

Diamond, Lapis Lazuli, 18k Gold, Yellow Gold

David Webb 18K Gold Lapis-Lazuli With Diamond Clip-On Earrings.

$36,830

Round Shape Tanzanite 3.16 Carat and Diamond Ring 18 Karat Gold.

Located in Brooklyn, NY

Round Tanzanite Ring & Diamonds , Round shape Tanzanite AAA brilliant deep Blue 3.16 carat . Total

Category

2010s Thai Fashion Rings

Materials

Diamond, Tanzanite, Gold, 18k Gold, Yellow Gold

Round Shape Tanzanite 3.16 Carat and Diamond Ring 18 Karat Gold.

$12,699

Victorian 0.50ct Sapphire and Diamond Trilogy Ring, c.1880s

Located in London, GB

deep blue central sapphire flanked by diamonds. The Sapphire is an old cut stone weighing 0.50 carat

Category

Antique 1880s Unknown Victorian Three-Stone Rings

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Victorian 0.50ct Sapphire and Diamond Trilogy Ring, c.1880s

$3,716

Van Cleef Arpels Sapphire and Diamond Bombe Ring in 18 Karat Gold, circa 1960s

By Van Cleef Arpels

Located in Roma, RM

blue sapphires and brilliant-cut diamonds, creating a rhythmic contrast of color and light. These

Category

Vintage 1960s French Dome Rings

Materials

Diamond, Sapphire, Gold

Van Cleef Arpels Sapphire and Diamond Bombe Ring in 18 Karat Gold, circa 1960s

$32,000

IGI Certified 2.26 Carat Sapphire and Diamond Earrings in 18K White Gold

Located in KOWLOON, HK

be cherished for generations. Experience the allure of deep blue sapphires and radiant diamonds today.

Category

2010s Hong Kong Modern Stud Earrings

Materials

Diamond, Sapphire, 18k Gold, White Gold

IGI Certified 2.26 Carat Sapphire and Diamond Earrings in 18K White Gold

$4,700

IGI Certified 9.22 Carat Sapphire and Diamond Ring in 18K White Gold

Located in KOWLOON, HK

discerning collector. With its deep blue sapphire and sparkling diamond accents, this ring is sure to become

Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

IGI Certified 9.22 Carat Sapphire and Diamond Ring in 18K White Gold

$8,300

Edwardian 1.35ct Sapphire and Diamond Cluster Ring, c.1910s

Located in London, GB

. The deep blue sapphire is an oval cut stone, weighing 1.35 carat and claw set into platinum. The

Category

Vintage 1910s Unknown Edwardian Cluster Rings

Materials

Diamond, Sapphire, 18k Gold, Platinum

Edwardian 1.35ct Sapphire and Diamond Cluster Ring, c.1910s

$6,358

Art Deco Platinum 1.10ctw Diamond Triangular Synthetic Sapphire Cocktail Ring

Located in Montclair, NJ

--Stone(s):-- (4) Synthetic Sapphires - French Triangular Cut - Milgrain-Bezel Set - Deep Blue

Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Platinum 1.10ctw Diamond Triangular Synthetic Sapphire Cocktail Ring

$7,998

Chocolatier Ring featuring Topaz Chocolate Vanilla Diamonds set in 14K Gold

By Le Vian

Located in Great Neck, NY

Chocolatier® Ring featuring Deep Sea Blue Topaz™ Chocolate Diamonds® , Vanilla Diamonds® set in 14K

Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Topaz, 14k Gold

Chocolatier Ring featuring Topaz Chocolate Vanilla Diamonds set in 14K Gold

$1,681

Vintage Red Carpet Aquamarine Gemstone and Diamond Gold Bracelet

Located in Montreal, QC

Simply Beautiful! Elegant and finely detailed Vintage Oscar Worthy Deep Intense Blue Aquamarine and

Category

21st Century and Contemporary Modern Link Bracelets

Materials

Aquamarine, Diamond, Gold, 14k Gold, White Gold

Vintage Red Carpet Aquamarine Gemstone and Diamond Gold Bracelet

$7,500

Vesper Platinum Ring with 1.16ct Sapphire and 0.36ct Diamonds, Elegant Ring

Located in Greeneville, TN

platinum for exceptional durability and elegance 💙 1.16ct genuine sapphire with a rich, deep blue hue 💎

Category

Antique 15th Century and Earlier American Modern Wedding Rings

Materials

Diamond, Sapphire, Platinum

Vesper Platinum Ring with 1.16ct Sapphire and 0.36ct Diamonds, Elegant Ring

$3,625

Nina Zhou 5.85 ctw Moonstone Sapphire Diamond Chandelier Drop Earrings

By Nina Zhou

Located in Rowland Heights, CA

blue sapphires and sparkling diamonds, these earrings evoke the allure of a starlit night sky

Category

21st Century and Contemporary American Modern Chandelier Earrings

Materials

Sapphire, Diamond, Moonstone, 14k Gold, Yellow Gold

Nina Zhou 5.85 ctw Moonstone Sapphire Diamond Chandelier Drop Earrings

$1,725

9.05 Carat Oval Sapphire and Emerald-Cut Diamond Tennis Bracelet in 14KW

Located in New York, NY

. Featuring alternating oval-cut deep blue sapphires and emerald-cut diamonds, each securely set in a refined

Category

2010s American Contemporary Tennis Bracelets

Materials

Diamond, 14k Gold, White Gold

9.05 Carat Oval Sapphire and Emerald-Cut Diamond Tennis Bracelet in 14KW

$14,500 / item

24 Carat Briolette Sapphire Diamond Yellow Gold Dangle Earrings

Located in Stamford, CT

Deep blue sapphire and diamond dangle earrings. 2 rich blue briolette sapphires totaling 24.00cts

Category

21st Century and Contemporary Dangle Earrings

Materials

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

24 Carat Briolette Sapphire Diamond Yellow Gold Dangle Earrings

$1,850

Platinum Ring 1.5ct No Heat Sapphire, Diamonds GRS Certificate Estate Sultan Oma

Located in Antwerp, BE

Magnificent Ring With 1.5ct Deep Blue Sapphire, Marquise Diamonds with GRS Certificate from Estate

Category

20th Century European Artisan Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Platinum Ring 1.5ct No Heat Sapphire, Diamonds GRS Certificate Estate Sultan Oma

$15,119

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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.
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 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.
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 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 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.