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Royal Deep Blue Sapphire Betwixt Diamond Engagement Ring in 18K White Gold
By VR Jewels
Located in New York, NY
Blue Sapphire and Diamond Ring in 18K Gold is a sign of pure love. For centuries, diamonds have
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

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

【Énigma】Celeste Glow 2.7ct Deep Blue Aquamarine Diamond Platinum Pendant Neckl
Located in New York, NY
aquamarine of exceptional depth and clarity. Its rich blue color and brilliant fire are complemented by a
Category

21st Century and Contemporary Japanese Drop Necklaces

Materials

Aquamarine, Diamond, Platinum

Birthstone Earrings Featuring Deep Sea Blue Topaz Nude Diamonds
By Le Vian
Located in Great Neck, NY
Birthstone Earrings featuring 1 cts. Deep Sea Blue Topaz™, 1/2 cts. Nude Diamonds™ set in 14K
Category

21st Century and Contemporary More Earrings

Birthstone Earrings featuring Deep Sea Blue Topaz Nude Diamonds
By Le Vian
Located in Great Neck, NY
Birthstone Earrings featuring 2 7/8 cts. Deep Sea Blue Topaz™, 1/10 cts. Nude Diamonds™ set in 14K
Category

21st Century and Contemporary More Earrings

Oval 3.16 Carats Deep Blue Ceylon Sapphire and Diamond Ring
Located in Uccle, BE
Carats surrounded by 6 marquise shape diamonds of 0.39 Carats ( H colour - Vs clarity ) and 0.19 Carats
Category

21st Century and Contemporary Belgian Modern Engagement Rings

Materials

Diamond, Sapphire, Gold, 18k Gold

1.54Ct Deep Blue Sapphire Diamond Halo Stud Earrings in 14K White Gold Jewelry
By VR Jewels
Located in New York, NY
Elegant stud earrings crafted in 14K white gold, featuring 1.54 carats of deep blue marquise-cut
Category

21st Century and Contemporary American Art Deco Stud Earrings

Materials

Diamond, Blue Sapphire, Gold, 14k Gold, White Gold

Evil Eye Deep Blue Sapphire 14 Karat Yellow Gold Diamond Bracelet for Her
By Natkina
Located in Genève, GE
14K Solid Yellow Gold Diamond Bracelet (Matching Necklace Available) Diamond 38 RND- 0,21ct
Category

21st Century and Contemporary Swiss Modern Chain Bracelets

Materials

Diamond, Blue Sapphire, Yellow Gold

Evil Eye Deep Blue Sapphire 14 Karat Yellow Gold Diamond Bracelet for Her
By Natkina
Located in Genève, GE
14K Solid Yellow Gold Diamond Bracelet Diamond 38 RND- 0,21ct Sapphire 1-0,16 ct Weight 2,14 gram
Category

21st Century and Contemporary Swiss Modern Chain Bracelets

Materials

Diamond, Blue Sapphire, Yellow Gold

1.53 Carat Retro Gold Ring Natural Oval Deep Blue Sapphire Diamond, circa 1980
Located in Los Angeles, CA
centerstone is a Natural Oval Deep Blue Sapphire weighing 0.98 carats, measuring 7.1x5.5mm. Set in the
Category

Vintage 1980s Unknown Retro Cocktail Rings

Materials

Diamond, Blue Sapphire, 14k Gold

1ct Deep Blue Sapphire And Diamond 18k Yellow Gold Hidden Halo Pendant Necklace
By Gems and Jewels UK
Located in Birmingham, GB
Natural Deep Blue Sapphire & Diamond 18k Yellow Gold Pendant Necklace. 1.00 Carat sapphire with a
Category

21st Century and Contemporary Pendant Necklaces

Materials

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

1.74Ct Natural Deep Blue Sapphire Diamond Three Stone Ring in 14K White Gold
By VR Jewels
Located in New York, NY
This elegant ring showcases 1.74 carats of natural deep blue sapphires, expertly cut in a classic
Category

21st Century and Contemporary American Modern Three-Stone Rings

Materials

Diamond, Blue Sapphire, Gold, 14k Gold, White Gold

Art Deco Style 2.6Ct Deep Blue Sapphire Diamond Cocktail Ring 14K White Gold
By VR Jewels
Located in New York, NY
This Art Deco-style cocktail ring features a 2.6-carat oval-cut deep blue sapphire as the center
Category

21st Century and Contemporary American Art Deco Cocktail Rings

Materials

Diamond, Blue Sapphire, Gold, 14k Gold, White Gold

Unique 14k Solid White Gold Halo Drop Earrings with Deep Blue Sapphire Diamond
By VR Jewels
Located in New York, NY
Deep Blue Sapphire & Diamond, crafted in luminous white gold. Each earring showcases a striking
Category

21st Century and Contemporary American Contemporary Drop Earrings

Materials

Diamond, Blue Sapphire, Gold, 14k Gold, White Gold

5 Ct Oval Deep Blue Sapphire Baguette Diamonds Engagement Ring 18K White Gold
By VR Jewels
Located in New York, NY
This elegant engagement ring features a stunning 5-carat oval-cut deep blue sapphire as the
Category

21st Century and Contemporary American Art Deco Engagement Rings

Materials

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

Minimalist Deep Blue Oval Sapphire and Diamond Everyday Ring in 14k White Gold
By VR Jewels
Located in New York, NY
Minimalist Deep Blue Oval Sapphire and Diamond Everyday Ring in 14K Gold featuring natural blue
Category

21st Century and Contemporary American Art Deco Bridal Rings

Materials

Diamond, Sapphire, Blue Sapphire, Gold, 14k Gold, White Gold

Evil Eye Deep Blue Sapphire 14 Karat Yellow Gold Diamond Ring for Her
By Natkina
Located in Genève, GE
14K Solid Yellow Gold Diamond Ring (Available in White Gold) Diamond 58 RND- 0,24ct Blue Natural
Category

21st Century and Contemporary Swiss Modern Fashion Rings

Materials

Diamond, Blue Sapphire, Yellow Gold

Evil Eye Deep Blue Sapphire 14 Karat White Gold Diamond Ring for Her
By Natkina
Located in Genève, GE
14K Solid White Gold Diamond Ring (Available in Yellow Gold) Diamond 58 RND- 0,24ct Blue Natural
Category

21st Century and Contemporary Swiss Modern Fashion Rings

Materials

Diamond, Blue Sapphire, White Gold

GRS Certified 4.05ct Natural No Heat Vivid Deep Blue Sapphire Diamonds Ring 14kt
Located in New York, NY
Dome Raised Cocktail 4.05ct. Natural GIA Certified Blue Sapphire Ring GRS Certified Report ID
Category

2010s American Solitaire Rings

Materials

Diamond, Blue Sapphire, 14k Gold, White Gold

Deep Intense Blue Sapphire Bee Brooch in 18K Yellow Gold with Diamonds Rubies
Located in Old Tappan, NJ
Pre owned vintage estate 18K yellow gold deep intense blue sapphire bee pin. The body of the bee
Category

Late 20th Century Unknown Brooches

Materials

Diamond, Blue Sapphire, 18k Gold, Yellow Gold

Evil Eye Deep Blue Sapphire 14 Karat Yellow Gold Diamond Necklace for Her
By Natkina
Located in Genève, GE
14K Solid Yellow Gold Diamond Necklace (Matching Bracelet Available) Diamond 61 RND- 0,35ct
Category

21st Century and Contemporary Swiss Modern Chain Necklaces

Materials

Diamond, Blue Sapphire, Yellow Gold

Genuine Deep Blue Sapphire Diamond Sleek Birthstone Band Ring in 14k White Gold
By VR Jewels
Located in New York, NY
Genuine Deep Blue Sapphire Diamond Sleek Birthstone Band Ring in 14K Gold featuring natural blue
Category

21st Century and Contemporary American Art Deco Band Rings

Materials

Diamond, Sapphire, Blue Sapphire, Gold, 14k Gold, White Gold

Antique Deep Royal Blue No Heat Sapphire Diamond Clipon Cocktail Earrings
Located in Miami, FL
Deep Royal Blue Sapphire & Diamond Large clip-on Cocktail earring,  Crafted in platinum, the
Category

Vintage 1960s Retro Clip-on Earrings

Materials

Diamond, Sapphire, Platinum

1.06ct Deep Blue Oval Cut Sapphire And Diamond 18k White Gold Three Stone Ring
By Gems and Jewels UK
Located in Birmingham, GB
Natural Deep Blue Sapphire And Diamond Three Stone 18k White Gold Ring. 1.26 Total Carat
Category

21st Century and Contemporary Three-Stone Rings

Materials

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

Cushion Shape 6.50 Carats Deep Blue Ceylon Sapphire and Diamond Ring
Located in Uccle, BE
Ring made by our craftsmen in Antwerp. The ring is made of gold 18K, set with a central Ceylon deep
Category

2010s Belgian Modern Engagement Rings

Materials

Diamond, Sapphire, Gold, 18k Gold

Platinum GIA 6.83ctw No Heat Deep Blue Sapphire Diamond Pendant Chain Necklace
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Sapphire - Large Oval Brilliant Cut - Prong Set - Gorgeous Deep
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Sapphire, Platinum

Pear Deep Blue Sapphire Engagement Ring with Diamonds in Solid 18K White Gold
By VR Jewels
Located in New York, NY
Blue Sapphire Engagement Ring with Diamonds in 18K Gold featuring natural sapphire of 1.75 carats
Category

21st Century and Contemporary American Art Deco Wedding Rings

Materials

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

18k Solid White Gold Natural Diamond and Oval Deep Blue Sapphire Engagement Ring
By VR Jewels
Located in New York, NY
Deep Blue Sapphire and Diamond Engagement Ring Set in 18K Gold featuring natural sapphire of 1.09
Category

21st Century and Contemporary American Art Deco Engagement Rings

Materials

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

Rare Natural Deep Blue Sapphire 18 Karat White Gold Diamond Ring for Her
By Natkina
Located in Genève, GE
14K Solid White Gold Diamond Ring Ring Size: 6.5 Total Ring Weight: 4 Grams Total Natural diamond
Category

21st Century and Contemporary Swiss Modern Fashion Rings

Materials

Diamond, Blue Sapphire, White Gold

Vintage Deep Bright Blue Sapphire and Diamond Halo Ring 18k Solid Yellow Gold
By VR Jewels
Located in New York, NY
Vintage Deep Bright Blue Sapphire and Diamond Halo Ring Set in 18K Gold featuring natural sapphire
Category

21st Century and Contemporary American Retro Wedding Rings

Materials

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

Very Fine Deep Vivid Blue 12.76 ct. Tanzanite and Diamond Platinum Necklace
Located in Aspen, CO
Of the finest quality, this deep vivid and bright blue Tanzanite (sometimes referred to as 'D Block
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, Tanzanite, Platinum

Platinum 1.77ctw Oval Deep Blue Sapphire w/ Diamond Dual Halo Cocktail Ring
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Sapphire - Oval Cut - Prong Set - Deep Blue Color - 7.4x5.9mm
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Certified sapphire deep blue 2.6 ct and diamonds gold ring, Wedding ring
Located in PARIS, FR
, flanked by two 0.18 ct pear-cut diamonds. The natural sapphire has a beautiful intense blue color that can
Category

Late 20th Century French Contemporary Three-Stone Rings

Materials

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

Contemporary Deep Blue Emerald Cut Iolite and Diamond 14k White Gold Ring
Located in Towson, MD
approximately 1.26 carats, accented by four round single-cut diamonds totaling approximately 0.06 carats, J–K
Category

20th Century Contemporary Three-Stone Rings

Materials

Diamond, Iolite, 14k Gold, White Gold

Very Fine Deep Vivid Blue 12.76 ct. Tanzanite and Diamond Platinum Necklace
Located in Aspen, CO
Of the finest quality, this deep vivid and bright blue Tanzanite (sometimes referred to as 'D Block
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, Tanzanite, Platinum

18K White Gold 3.55 Ct Deep Blue Sapphire 0.3 Ct Diamond Halo Cocktail Ring
By VR Jewels
Located in New York, NY
Experience timeless elegance with this 18K Solid White Gold 3.55 Ct Deep Blue Sapphire & 0.3 Ct
Category

21st Century and Contemporary American Art Deco Cocktail Rings

Materials

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

Luxury 4.5 Carat Deep Blue Sapphire and Diamond Halo Cocktail Ring in 18k Gold
By VR Jewels
Located in New York, NY
This exquisite cocktail ring showcases a 4.5 CTW oval-cut deep blue sapphire, radiating timeless
Category

21st Century and Contemporary American Art Deco Cocktail Rings

Materials

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

Large GUM DROP Earrings with Hot Pink and Deep Blue Topaz and Diamonds
By Christina Addison
Located in New York, NY
18kt Yellow Gold Large GUM DROP™ Earrings with Hot Pink Topaz and Deep Blue Topaz and Diamonds. The
Category

21st Century and Contemporary American Contemporary Clip-on Earrings

Materials

Topaz, Amethyst, Citrine, Diamond, Pearl, Peridot, Blue Topaz, 18k Gold,...

Evil Eye Deep Blue Sapphire 14 Karat Pink Gold Diamond Pinkie Ring for Her
By Natkina
Located in Genève, GE
14K Solid Pink Gold Diamond Ring Diamond 16 RND- 0,06ct Blue Natural Sapphire 38 - 0,21 ct
Category

21st Century and Contemporary Swiss Modern Fashion Rings

Materials

Diamond, Blue Sapphire, Yellow Gold

Le Vian Ring featuring Deep Sea Blue Topaz Vanilla Diamonds
By Le Vian
Located in Great Neck, NY
Le Vian® Ring featuring 1 1/5 cts. Deep Sea Blue Topaz™, 1 cts. Vanilla Diamonds® set in 14K
Category

2010s Fashion Rings

Le Vian Earrings Featuring Deep Sea Blue Topaz Nude Diamonds
By Le Vian
Located in Great Neck, NY
Le Vian® Earrings featuring 4 3/4 cts. Deep Sea Blue Topaz™, 3/8 cts. Nude Diamonds™ set in 14K
Category

21st Century and Contemporary More Earrings

Deep Blue Sapphire Diamond Half Band Ring Gift for Her in 14k Yellow Gold
By VR Jewels
Located in New York, NY
Gemstone - Blue Sapphire Gemstone Weight - 1.59 cts Gemstone Size - 4x6, 3x4 mm Diamond Weight - 0.03 cts
Category

21st Century and Contemporary American Modern Band Rings

Materials

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

Le Vian Ring Featuring Deep Sea Blue Topaz Nude Diamonds, Chocolate Diamonds
By Le Vian
Located in Great Neck, NY
Le Vian® Ring featuring 1 cts. Deep Sea Blue Topaz™, 1 cts. Nude Diamonds™, Chocolate Diamonds® set
Category

21st Century and Contemporary Fashion Rings

Le Vian Ring Featuring Deep Sea Blue Topaz Chocolate Diamonds, Nude Diamonds
By Le Vian
Located in Great Neck, NY
Le Vian® Ring featuring 1 3/4 cts. Deep Sea Blue Topaz™, 1/4 cts. Chocolate Diamonds®, 1/10 cts
Category

21st Century and Contemporary Fashion Rings

Materials

Gold

Le Vian Ring Featuring Deep Sea Blue Topaz Chocolate Diamonds, Nude Diamonds
By Le Vian
Located in Great Neck, NY
Le Vian® Ring featuring 1 5/8 cts. Deep Sea Blue Topaz™, 1/6 cts. Chocolate Diamonds®, 3/8 cts
Category

21st Century and Contemporary Fashion Rings

Deep Blue Sapphire Diamond Toi et Moi Ring for Girlfriend in 18k White Gold
By VR Jewels
Located in New York, NY
Deep Blue Sapphire Diamond Toi et Moi Ring for Girlfriend in 18K Gold featuring natural sapphire of
Category

21st Century and Contemporary American Modernist Bridal Rings

Materials

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

Le Vian Ring Featuring Deep Sea Blue Topaz Chocolate Diamonds, Nude Diamonds
By Le Vian
Located in Great Neck, NY
Le Vian® Ring featuring 2 1/5 cts. Deep Sea Blue Topaz™, 3/8 cts. Chocolate Diamonds®, 3/8 cts
Category

21st Century and Contemporary Fashion Rings

Deep Blue Sapphire Diamond Half Band Ring Gift for Her in 14k White Gold
By VR Jewels
Located in New York, NY
White Gold Gemstone - Blue Sapphire Gemstone Weight - 1.98 cts Gemstone Size - 5.3x4.1 mm Diamond
Category

21st Century and Contemporary American Modern Band Rings

Materials

Diamond, Blue Sapphire, Gold, 14k Gold, White Gold

Edwardian deep Royal Blue Burmese sapphire and diamond cluster ring, circa 1915.
Located in London, GB
Edwardian deep Royal Blue Burmese sapphire and diamond cluster ring. Set to centre with a cushion
Category

Vintage 1910s Edwardian Cluster Rings

Materials

Diamond, Sapphire, Platinum

VR Jewels 18K White Gold Deep Blue Sapphire and Diamond Clip on Earrings set
By VR Jewels
Located in New York, NY
illuminating diamonds making a statement. Square cut blue sapphire earrings in 18K gold. Embrace your look
Category

21st Century and Contemporary American Modern Clip-on Earrings

Materials

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

4.01 Carat Deep Blue Spinel Emerald Cut Platinum Ring with Micro Pavé Diamonds
By Merkaba
Located in Beverly Hills, CA
A rare 4.01 carat deep blue spinel in an elegant emerald cut, set in platinum and framed by three
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Spinel, Diamond, White Diamond, Multi-gemstone, Emerald, Platinum

2.17 CTW Deep Blue Sapphire and Halo Diamond 18k Solid White Gold Stud Earrings
By VR Jewels
Located in New York, NY
Deep Blue Sapphire and Halo Diamond Stud Earrings in 18K Gold to make a statement with your look
Category

21st Century and Contemporary American Art Deco Stud Earrings

Materials

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

Emilio Jewelry GIA Certified Natural Deep Orange Diamond Ring
By Emilio!
Located in New York, NY
ultra rare Gia certified Fancy deep orange diamond as the focal point with no overtone. Please inquire
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Blue Diamond

4.01 Carat Deep Blue Spinel Emerald Cut Platinum Ring with Micro Pave Diamonds
By Merkaba
Located in Beverly Hills, CA
stone: Blue spinel, 4.01 carats, emerald cut Accent stones: Diamonds, micro pave, 0.80 carats total Ring
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Emerald, Spinel, Multi-gemstone, White Diamond, Diamond, Platinum

11.74 ct Very Fine Deep Blue Natural Star Sapphire fine Diamond Platinnum Ring
Located in Aspen, CO
stone, held by four long well shaped prongs, has a wonderful medium deep blue color. The distinct star
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Star Sapphire, Platinum

Emilio Jewelry GIA Certified Fancy Deep Green Diamond Ring
By Emilio!
Located in New York, NY
: weighing just over .60 carat Fancy Deep Green with no overtone. VS2 CUSHION. Setting: 66 white diamonds
Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, Blue Diamond, Pink Diamond

Deep Blue Sapphire and Diamond Three Stone Ring in 14k White Gold Gift for Women
By VR Jewels
Located in New York, NY
heart lies a mesmerizing 3.33-carat deep blue sapphire, exuding regal allure and timeless sophistication
Category

21st Century and Contemporary American Contemporary Three-Stone Rings

Materials

Diamond, Blue Sapphire, Gold, 14k Gold, White Gold

3ct Oval Deep Blue Sapphire Wedding Women Ring with Diamond in 18k Yellow Gold
By VR Jewels
Located in New York, NY
3 ct Sapphire and Diamond Ring in 18K Gold featuring natural sapphire of 3 carats and diamonds of
Category

21st Century and Contemporary American Art Deco Wedding Rings

Materials

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

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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 ringsvintage 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
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.