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Green Chrome Tourmaline Ring Gem 7.70 Carat GIA Certified Loose Gemstone
By Merkaba
Located in Beverly Hills, CA
Natural, untreated, collection quality 7.70 carat, vivid green Chrome Tourmaline oval gem, offered
Category

21st Century and Contemporary Mozambican Contemporary Loose Gemstones

Materials

Tourmaline, Chrome Tourmaline

1.22 Carat Brazilian Paraiba Tourmaline Diamond Platinum Ring, GIA Certified
Located in Beverly Hills, CA
certified by the GIA as natural with a Brazilian origin. It is complemented by 1.37 carats of round
Category

21st Century and Contemporary North American Fashion Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

Estate GIA Certified Pink Tourmaline Diamond Platinum Yellow Gold Ring
By Carvin French
Located in Miami, FL
" Pink Tourmaline set in Yellow gold. Surrounding the center stone are 26 Diamonds set in Platinum. This
Category

2010s Cocktail Rings

Materials

Diamond, Tourmaline, Gold, 18k Gold, Yellow Gold, Platinum

GIA Certified 1.83 Carat Paraiba Tourmaline Diamond Engagement Cocktail Ring
Located in Hong Kong, HK
A very gorgeous and stunning, Paraiba Tourmaline Engagement Cocktail Ring set in Platinum 900
Category

21st Century and Contemporary Hong Kong Modern Engagement Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified Paraiba Tourmaline Diamond Ring Estate 14 Karat White Gold
Located in Torrance, CA
Finely detailed estate ring, crafted in 14 karat white gold. GIA certified Paraiba tourmaline
Category

21st Century and Contemporary Unknown Modern Engagement Rings

Materials

Diamond, Tourmaline, 14k Gold

Ruchi New York GIA Certified Paraiba Tourmaline and Diamond Necklace
By Ruchi New York
Located in New York, NY
Exclusive Collection Impressively large and bright Paraiba Tourmaline and Diamond statement
Category

2010s Hong Kong Contemporary Pendant Necklaces

Materials

Diamond, White Diamond, Tourmaline, Gold, 18k Gold, White Gold

GIA Certified 0.30 Carat Brazilian Paraiba Tourmaline Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a GIA Certified 0.30 Carat Natural Brazilian Paraiba Tourmaline and 0.34
Category

21st Century and Contemporary Japanese Modern Fashion Rings

Materials

Tourmaline, Paraiba, Platinum

Top Grade 6.64ct GIA Certified Natural Tourmaline Red Purple Untreated Round Cut
By Gems and Jewels UK
Located in Birmingham, GB
Top Grade 6.64ct GIA Certified Natural Tourmaline Red Purple Untreated Round Cut Rare Untreated
Category

21st Century and Contemporary More Jewelry

Materials

Tourmaline

11.51 Carat Emerald-Cut Mint Tourmaline and Diamond Platinum Ring, GIA Certified
Located in Beverly Hills, CA
GIA Certified 11.51 Carat Emerald-Cut Mint Tourmaline and Diamond Three-Stone Platinum Ring by
Category

21st Century and Contemporary American Contemporary Three-Stone Rings

Materials

Diamond, Tourmaline, Platinum

GIA Certified 1.30 Carat Natural Paraiba Tourmaline Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a GIA Certified 1.30 Carat Natural Mozambique Paraiba Tourmaline and
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified 0.32 Carat Brazilian Paraiba Tourmaline Ring Set in Platinum
Located in Tokyo, JP
A beautiful and elegant ring featuring a GIA Certified 0.32 Carat Trillion Cut Paraiba Tourmaline
Category

21st Century and Contemporary Japanese Modern Engagement Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified 0.23 Carat Brazilian Paraiba Tourmaline Ring Set in Platinum
Located in Tokyo, JP
A beautiful Engagement Ring featuring a GIA Certified 0.23 Carat Natural Brazilian Paraiba
Category

21st Century and Contemporary Japanese Modern Engagement Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified 0.27 Carat Brazilian Paraiba Tourmaline Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a GIA Certified 0.27 Carat Natural Brazilian Paraiba Tourmaline and 0.27
Category

21st Century and Contemporary Japanese Modern Cluster Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified 0.49 Carat Neon Blue, Brazilian Paraiba Tourmaline Diamond Ring
Located in Tokyo, JP
A beautiful ring featuring a GIA Certified 0.49 Carat Natural Brazilian Paraiba Tourmaline and 1.16
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified 0.26 Carat Brazilian Paraiba Tourmaline Ring set in Platinum
Located in Tokyo, JP
Tourmaline and 0.31 carat of Diamond Accents set in Platinum. The center Paraiba Tourmaline comes with a GIA
Category

21st Century and Contemporary Japanese Modern Engagement Rings

Materials

Tourmaline, Paraiba, Diamond, Platinum

GIA Certified 1.16 Carat Paraiba Tourmaline with Diamond Pendant Necklace 18k
By Alexander Beverly Hills
Located in BEVERLY HILLS, CA
Rare Paraiba tourmaline and diamond pendant necklace, GIA report. 1.16ct pear Paraiba tourmaline
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, Tourmaline, 18k Gold, White Gold

GIA Certified 10 Carat No Heat Paraiba Tourmaline Diamond Three-Stone Ring
By Antinori Fine Jewels
Located in Chicago, IL
Amazing natural Gia certified authentic paraiba tourmaline with two side half moon natural diamonds
Category

2010s Italian Modern Cocktail Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified 3.28 ct Natural Mozambique Paraiba Tourmaline Diamond 14KWG Ring
Located in Los Angeles, CA
Introducing our newest masterpiece. Incredible Mozambique Paraiba Tourmaline 3.28 carats set in 14K
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Tourmaline, Paraiba, Gold, 14k Gold, White Gold

GIA Certified 13 Cts Orange Tourmaline Rose Cut Diamond Cocktail Ring
Located in Hong Kong, HK
Please check out the HD video! Here is a large oversized 13.09cts orange tourmaline ring. Very
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Tourmaline, Gold, 18k Gold, Rose Gold

GIA Certified 1.19 Carat Paraiba Tourmaline and Diamond Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a GIA Certified 1.19 Carat Natural Mozambican (South East Africa
Category

21st Century and Contemporary Japanese Modern Fashion Rings

Materials

Tourmaline, Paraiba, Diamond, Platinum

GIA Certified 5.60 Carat Rose Cut Forest Green Tourmaline and Diamond Ring
Located in New York, NY
With a GIA Certified 5.60 carat rose cut center, and 0.61 carats white diamonds, this ring shines
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Tourmaline, 18k Gold, White Gold, Yellow Gold

MDJ JEWELS Paraiba Tourmaline Dome Ring Brazil All GIA Certified 18K White Gold
Located in New York, NY
Total in Paraiba Mix Shape [10 stones, all GIA Certified] Origin - BRAZIL **Batalha Mine** GIA#'s
Category

21st Century and Contemporary African Dome Rings

Materials

Tourmaline, Paraiba, White Gold

18 Karat White Gold GIA Certified 7.18 Carat Pink Tourmaline and Diamond Ring
Located in Houston, TX
7.18cts. This Pink Tourmaline has a GIA Certificate, GIA report number 2165366450. There are 6 round cut
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Tourmaline, Gold, White Gold, 18k Gold

Large GIA Certified Oval Paraiba Tourmaline and Diamond 18 Karat White Gold Ring
Located in Tustin, CA
Transparent greenish blue modified brilliant oval cut paraiba tourmaline has been certified by GIA
Category

1990s American Contemporary Cocktail Rings

Materials

Tourmaline, White Diamond, White Gold, 18k Gold

GIA Certified 1.81 Carat Oval Cut Blue-Green Tourmaline and Diamond Ring ref1310
By Diamond Town
Located in New York, NY
Elegance meets extravagance in this resplendent ring, featuring a GIA Certified 1.81 carat oval-cut
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Tourmaline, 18k Gold, White Gold

GIA Certified Paraiba Tourmaline Ring w Earth Mined Diamonds in Solid 14K Gold
Located in Columbus, OH
This beautiful ring features a 0.88 carat pear shaped Paraiba Tourmaline gemstone with natural
Category

2010s American Modern Cocktail Rings

Materials

Diamond, White Diamond, Tourmaline, Paraiba, Gold, 14k Gold, Yellow Gold

GIA Certified 1.33 Carat Brazilian Paraiba Tourmaline Diamond Cocktail Ring RARE
Located in New York, NY
A very rare Brazilian Pariaba Tourmaline Diamond Cocktail Ring which looks stunning on anyone
Category

21st Century and Contemporary Brazilian Cocktail Rings

Materials

Paraiba, Diamond, Platinum

Paraiba Diamond Platinum Ring, GIA Certified
Located in Beverly Hills, CA
certified by the GIA as a natural Paraiba Tourmaline with a rare electric green color. The oval shaped
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Tourmaline, Platinum

Wendy Brandes GIA Certified Paraiba Tourmaline Two-Finger 18K White Gold Ring
By Wendy Brandes
Located in New York, NY
hand or running in between your fingers. Two GIA-certified pear-shaped Pairaba tourmaline weight 3.09
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Paraiba, White Gold

GIA Certified 12 Carat Pink Tourmaline Diamond Pendant Necklace Enhancer 18K G
Located in New York, NY
12 Carat Pear Cut Pink Tourmaline and Diamond Pendant Necklace Enhancer GIA Certified Report
Category

2010s Pendant Necklaces

Materials

Diamond, Rubelite, 14k Gold

GIA Brazilian Paraiba Tourmaline and White Diamond Ring in Platinum
Located in Los Angeles, CA
Gorgeous 3.25 ct. GIA certified paraiba tourmaline oval from Brazil with 0.80 ct. good quality
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Tourmaline, Paraiba, Platinum

1960 s GIA Green Tourmaline Diamond Platinum Ribbon Cocktail Ring
Located in Miami, FL
Vintage style GIA certified Green Tourmaline & Diamond cocktail ring, with dazzling floral & ribbon
Category

Vintage 1960s American Art Deco Cocktail Rings

Materials

Diamond, Tourmaline, Platinum

GIA Brazilian Paraiba Tourmaline Cabochon and Diamond Stud Earrings in Platinum
Located in Los Angeles, CA
Gorgeous 4.52 ct. GIA certified Brazilian paraiba tourmaline cabochon rounds with 0.64 ct. white
Category

21st Century and Contemporary Stud Earrings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Green Tourmaline and Diamond Ballerina Ring in 14k White Gold
Located in La Jolla, CA
GIA Certified Green Tourmaline and Diamond Ring in 14k Gold Large Emerald cut Green Tourmaline
Category

21st Century and Contemporary North American Cocktail Rings

Materials

Diamond, Tourmaline, 14k Gold, White Gold

Vintage 18k Gold GIA 5.66ct Rubellite Tourmaline Diamond Spray Ballerina Ring
Located in Montclair, NJ
ring is set with a natural, GIA certified, rubellite tourmaline that weighs 5.66 carats in weight. The
Category

Late 20th Century Unknown Cocktail Rings

Materials

Diamond, Rubelite, Tourmaline, 18k Gold, White Gold

18K Gold GIA Green Chrome Tourmaline Emerald Cut Diamond Floating 3 Stone Ring
Located in Montclair, NJ
yellow gold and features a truly breathtaking, GIA certified cushion cut chrome tourmaline solitaire
Category

1990s American Solitaire Rings

Materials

Diamond, Tourmaline, Chrome Tourmaline, 18k Gold, Yellow Gold

Estate GIA Cert Paraiba Green Tourmaline Cushion Halo Ring 14K Rose Gold
Located in Scottsdale, AZ
For sale is a stunning GIA Certified Paraiba Green Tourmaline Cushion Halo Ring! Showcasing 1
Category

21st Century and Contemporary Fashion Rings

Materials

Tourmaline, Diamond, 14k Gold, Rose Gold

GIA Certified 1.31 Carat Pear Shape Diamond Halo Engagement Ring
Located in Boca Raton, FL
Material: 14k rose gold Center Diamond Details: GIA certified 1.31ct pear shape diamond. Diamond is
Category

2010s Unknown Engagement Rings

Materials

Diamond, White Diamond, Tourmaline, 14k Gold, Rose Gold

G.I.A Certified 10.24 ct. Hot Pink Tourmaline White Diamond Ring
Located in Aspen, CO
GIA certified natural fine large tourmaline and diamond ring. This fine vivid pink/raspberry
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

White Diamond, Tourmaline, 18k Gold

GIA Certified 0.17 Carat Natural Brazilian Paraiba Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a GIA Certified 0.17 Carat Natural Brazilian Paraiba Tourmaline and 0.44
Category

21st Century and Contemporary Japanese Modern Cluster Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified 3.28 Carat Natural Brazilian Paraiba Ring Set in Platinum
Located in Tokyo, JP
A beautiful ring featuring a GIA Certified Carat Natural Brazilian Paraiba Tourmaline and 0.71
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified 1.09 Carat Natural Brazilian Paraiba Ring Set in Platinum
Located in Tokyo, JP
A beautiful Halo Ring featuring a GIA Certified 1.09 Carat Natural Brazilian Paraiba Tourmaline and
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

Nazarelle 14 Karat White and Rose Gold Pink GIA Tourmaline Multi-Color Halo Ring
By Nazarelle
Located in Houston, TX
This ring is made in 14k white and rose gold featuring a 7.96ct GIA certified oval cut pink
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Pink Sapphire, Tourmaline, 14k Gold

Paraiba Tourmaline and Diamond Ring
Located in Trumbull, CT
GIA Certified 5.44 Carat Paraiba Tourmaline Diamond Cocktail ring set in 18K White Gold. White
Category

21st Century and Contemporary American Artisan More Rings

Materials

Diamond, Tourmaline, 18k Gold

Oscar Heyman Fine Tourmaline Diamond Platinum Cocktail Ring
By Oscar Heyman
Located in Miami, FL
, rare GIA certified cushion-cut Tourmaline of Blue-Green color, weighing approx. 17.39cts. Complimented
Category

Vintage 1970s American Art Deco Cocktail Rings

Materials

Diamond, Tourmaline, Platinum

1980s Heart Shape Multi-Gems 18 Karat Gold Bracelet
Located in Miami, FL
. Centered with 10 genuine heart cut semi precious gems all GIA Certified (green tourmaline, pink tourmaline
Category

Vintage 1980s Link Bracelets

Materials

Citrine, Diamond, Garnet, 18k Gold, Yellow Gold, Gold

4.91ct Oval Double Cabochon Pink Tourmaline GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Tourmaline The GIA report reads as follows: GIA Report Number
Category

2010s Brazilian Loose Gemstones

Materials

Tourmaline

Estate Platinum 3.90 GIA Certified Pink Tourmaline and Diamond Fashion Ring
Located in Scottsdale, AZ
Estate platinum 3.90 GIA certified pink tourmaline and diamond fashion ring. Showcasing one cushion
Category

21st Century and Contemporary Fashion Rings

Materials

Diamond, Tourmaline, Platinum

GIA Certified .47 Carat Brazilian Paraiba Tourmaline
By Sarosi By Timeless Gems
Located in Los Angeles, CA
So pretty and rare! This blue-green Paraiba tourmaline is eye clean and brilliant, measuring 6.48 x
Category

21st Century and Contemporary American Artisan More Jewelry

Materials

Tourmaline

GIA Certified 6.90 Carat Tourmaline Diamond Platinum Ring
Located in Stamford, CT
GIA Certified natural green blue 6.90 carat cushion cut tourmaline in a custom-made platinum ring
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Tourmaline, Platinum

Brazilian Paraiba Tourmaline Diamond Platinum Ring, GIA Certified
Located in Beverly Hills, CA
and comes with the original GIA certificate proving its prized Brazilian origin. Ring Size 6.75
Category

21st Century and Contemporary American Cocktail Rings

Materials

Diamond, Tourmaline, Paraiba, Platinum

GIA Certified 23.28 Carat Pear Cut Natural Rubellite Tourmaline
Located in Punta Gorda, FL
It comes with the GIA Certificate Natural Rubellite Tourmaline Carat Weight: 23.28 Carat Color
Category

21st Century and Contemporary Contemporary Loose Gemstones

Materials

Rubelite, Tourmaline

GIA Certified Authentic Paraiba Tourmaline Cushion Cut Diamond Ring
By Antinori Fine Jewels
Located in Chicago, IL
has been certified as authentic paraiba tourmaline by GIA and has very little inclusions please check
Category

2010s Italian Modern Solitaire Rings

Materials

Diamond, White Diamond, Tourmaline, Paraiba, 18k Gold

GIA Certified 10.70 Carat Natural Purple Tourmaline Diamonds Ring Platinum
Located in New York, NY
Octagonal cut: 11.45 X 11.36 X 8.60mm Transparent, Vibrant Color & Clean Clarity. GIA: "Tourmaline
Category

2010s American Solitaire Rings

Materials

Diamond, Tourmaline, Platinum

GIA Certified 15.38 Carat Natural Mozambique Copper Bearing Paraiba Tourmaline
Located in Los Angeles, CA
, light and life to your jewelry design. Discover a captivating natural certified Paraiba tourmaline that
Category

21st Century and Contemporary Mozambican Loose Gemstones

Materials

Tourmaline, Paraiba

GIA Certified 14.15ct natural red tourmaline diamonds ring 18kt Rubellite
Located in New York, NY
Tourmaline Prime 11.55ct. Natural Purple Red Tourmaline ring. Report: 6177627468 Pear shape
Category

2010s American Solitaire Rings

Materials

Diamond, Tourmaline, 18k Gold, Rose Gold

.34 Carat Brazilian Paraiba Tourmaline, Unset Loose Gemstone, GIA Certified
By Sarosi By Timeless Gems
Located in Los Angeles, CA
. Very little Paraiba tourmaline is mined; much less in this color and quality. This pear shaped Paraiba
Category

21st Century and Contemporary Brazilian Artisan Loose Gemstones

Materials

Tourmaline, Paraiba

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Gia Certified Tourmaline For Sale on 1stDibs

You are likely to find exactly the gia certified tourmaline you’re looking for on 1stDibs, as there is a broad range for sale. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and White Gold — can elevate any look. You can easily find a 10 antique edition and 63 modern creations to choose from as well. Making the right choice when shopping for a gia certified tourmaline may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 20th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. For this particular accessory, there are many different carat weights to choose from, but .5 Carat and 1 Carat versions are of considerable interest. A gia certified tourmaline from Berca Atelier, Merkaba and Alexander of Beverly Hills — each of whom created a beautiful version of this treasured accessory — is worth considering. An oval cut version of this piece has appeal, but there are also pear cut and cushion cut versions for sale. Finding a gia certified tourmaline for sale for women should be easy, but there are 21 pieces available to browse for unisex as well as men, too.

How Much is a Gia Certified Tourmaline?

On average, a gia certified tourmaline at 1stDibs sells for $12,900, while they’re typically $950 on the low end and $250,000 for the highest priced versions of this item.

The Legacy of Tourmaline in Jewelry Design

Very few gems dazzle quite in the manner that tourmaline does — vintage and antique tourmaline jewelry is a showstopper, and you can blame this on its wide range of spectacular colors. In fact, when Dutch traders brought stones back home from Sri Lanka that they couldn't identify, they called them "toramalli," a Sinhalese term for "mixed gems."

If you could transform the ocean to a gem, this is what it would look like: a clear, translucent azure, bordering on turquoise, hypnotizing in its depth and sparkling in the sun.

There is, in fact, such a stone, although it comes from deep in the copper-rich mountains of Paraíba, Brazil, and not from the oceans along its coast. Far rarer than diamonds, Paraíba tourmaline, a kind of tourmaline discovered only in the 1980s, is treasured as much for its extraordinary color as its scarcity, both of which contribute to its high value.

While diamonds generally sell for about $6,000 per carat, a carat of Paraíba tourmaline is likely to fetch about $16,000. Fans of the gem are said to include singer Taylor Swift and actress Zooey Deschanel, as well as some of the finest jewelers.

“No other stone can have a color as magnetic and captivating as Paraíba tourmaline,” says Vania Leles of VanLeles Diamonds, who combines the stone with diamonds and other gems in several of her designs.

You don't have to stop at Paraíba tourmaline jewelry — on 1stDibs, find the most extraordinary antique and vintage tourmaline rings, tourmaline and diamond earrings and other accessories.

Questions About Gia Certified Tourmaline
  • 1stDibs ExpertApril 5, 2022
    Yes, Cartier diamonds are indeed GIA certified. The Gemological Institute of America (GIA) works closely with Cartier and certifies everything from the cut and clarity to the color of the gem. Shop a collection of expertly vetted Cartier jewelry from some of the world’s top sellers on 1stDibs.
  • 1stDibs ExpertFebruary 22, 2021
    When a diamond is GIA certified, it means that the stone has undergone the meticulous set of grading procedures that have been established by the Gemological Institute of America. The GIA is not a jeweler — it is an independent, nonprofit group that sets the standards for determining the quality of a diamond.
  • 1stDibs ExpertAugust 17, 2021
    In the United States, diamond rings are certified by an official gemological laboratory known as the Gemological Institute of America. A certified diamond ring means that the diamond has undergone a quality analysis by experts at an institution such as the GIA and these experts have issued a lab report that is indicative of the grading process.
  • 1stDibs ExpertFebruary 13, 2023
    While diamond studs don't need to be GIA-certified to be sold, experts typically recommend that you only purchase diamonds that carry certification from the Gemological Institute of America (GIA) or Authentic Gem Security Lab (AGSL). Certifications bring transparency to the buying process, allowing you to know the level of quality of a diamond before you purchase it. Shop a collection of vintage and modern diamond gemstone earrings from some of the world’s top jewelers on 1stDibs.
  • 1stDibs ExpertMarch 22, 2022
    Whether Neil Lane diamonds are GIA-certified or not depends on the piece. All of the diamonds featured in rings and other jewelry designs from the Neil Lane Couture collection do carry GIA certification. Pieces made for third-party retailers may not. On 1stDibs, find a collection of Neil Lane jewelry.
  • 1stDibs ExpertAugust 15, 2024
    Many experts believe that buying a GIA-certified diamond is worth it. The Gemological Institute of America (GIA) has a well-established reputation for providing accurate, trustworthy ratings and certifications. A diamond that carries a GIA certification has undergone rigorous examinations and tests to assess its quality, which can make it a good investment. Find a diverse assortment of diamond jewelry on 1stDibs.