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Gia Certified Green

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14.13 Carat GIA Certified Green Emerald Diamond Platinum Ring
By Diana M. Jewels
Located in New York, NY
GIA Certified Green Emerald and Diamond Ring, Features 14.13 Carats Emerald Cut Green Emerald
Category

21st Century and Contemporary American Cocktail Rings

Materials

Emerald, Platinum

GIA Certified Green Yellow Sapphire 1.20ct Untreated Round Cut Unheated Rare
By Gems and Jewels UK
Located in Birmingham, GB
GIA Certified Green Yellow Sapphire 1.20ct Untreated Round Cut Unheated Rare Rare Untreated VIVID
Category

21st Century and Contemporary More Jewelry

Materials

Yellow Sapphire

Rare 1.33Ct GIA Certified Green Blue Sapphire Untreated Cushion Cut 7.7x5.5mm
By Gems and Jewels UK
Located in Birmingham, GB
Rare 1.33Ct GIA Certified Green Blue Sapphire Untreated Cushion Cut 7.7x5.5mm Natural Untreated
Category

21st Century and Contemporary More Jewelry

Materials

Blue Sapphire

4.58 Carat GIA Certified Green Jadeite Jade ‘A’ Grade Oval Cabochon Untreated
By Gems and Jewels UK
Located in Birmingham, GB
4.58 Carat GIA Certified Green Jadeite Jade ‘A’ Grade Oval Cabochon Untreated GIA Certified
Category

21st Century and Contemporary More Jewelry

Materials

Jade

Huge 17.57Ct GIA Certified Green Jadeite Jade ‘A’ Grade Oval Cabochon Rare Gem
By Gems and Jewels UK
Located in Birmingham, GB
Huge 17.57Ct GIA Certified Green Jadeite Jade ‘A’ Grade Oval Cabochon Rare Gem Huge GIA Certified
Category

21st Century and Contemporary More Jewelry

Materials

Jade

GIA Certified Green Natural Jadeite Jade Yellow Gold Platinum Pendant Necklace
Located in Stamford, CT
Art Deco Jadeite Jade pendant necklace. GIA certified green natural Lozenge tablet cut Jadeite Jade
Category

Early 20th Century Art Deco Pendant Necklaces

Materials

Diamond, Jade, 14k Gold, Platinum, Gold, Yellow Gold

GIA Certified Green Emerald Diamond Ring
By Diana M. Jewels
Located in New York, NY
Magnificent Green emerald and diamond ring set with the finest quality half moon diamonds in
Category

21st Century and Contemporary American Three-Stone Rings

Materials

Emerald, Platinum

GIA Certified Green Emerald 3 Stone Ring
By M&V Vanguard Jewelry
Located in New York, NY
jewelry that will compliment your collection! Center Stone is a beautiful deep green color, GIA certified
Category

2010s American Modern Three-Stone Rings

Materials

Emerald, Platinum, Yellow Gold, 18k Gold

1.19Ct GIA Certified Green Blue Teal Untreated Sapphire Natural Cushion Cut Gem
By Gems and Jewels UK
Located in Birmingham, GB
1.19Ct GIA Certified Green Blue Teal Untreated Sapphire Natural Cushion Cut Gem Natural Green Blue
Category

21st Century and Contemporary More Jewelry

Materials

Sapphire

Larter & Sons GIA Certified Green Malachite Yellow Gold Cufflinks
Located in Stamford, CT
Larter & Sons natural Malachite cufflinks in 14k yellow gold. GIA certified 2 banded green
Category

Mid-20th Century Cufflinks

Materials

Malachite, Gold, 14k Gold, Yellow Gold

Emilio Jewelry GIA Certified Green and Yellow Diamond Ring
By Emilio!
Located in New York, NY
Emilio Jewelry 3.60 Carat GIA Certified Natural green and Yellow Diamond Ring. Wear this simple
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Yellow Diamond, 18k Gold

GIA Certified Green Diamond, Three-Stone Ring in 18K Gold
Located in Bangkok, Bangrak
by the Gemological Institute of America (GIA) as a natural fancy light grayish yellowish green
Category

2010s Thai Contemporary Three-Stone Rings

Materials

Diamond, White Gold, 18k Gold

Diana M. GIA Certified Green 15.34 Carat Emerald Drop Earrings
By Diana M. Jewels
Located in New York, NY
Weight and Two GIA Certified Hear Shaped Diamonds in 1.41 Carats of Diamond Weight accompanied by Round
Category

21st Century and Contemporary American Drop Earrings

Materials

Emerald, Diamond, White Diamond, 18k Gold, White Gold

GIA Certified Green Tourmaline Sea Foam Diamond Necklace 18kt White Gold
Located in München, DE
Tourmaline in the sought-after color blue-green, about 7.52 carat, uniform color distribution
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Tourmaline, White Gold

18 Karat Rose Gold GIA Certified Green Yellow Diamond Fashion Ring
Located in Macau, MO
Intense Green Yellow diamond weighing 1.04 carats, surrounded by natural pink diamonds, mounted in 18
Category

2010s Hong Kong Contemporary Fashion Rings

Materials

Yellow Diamond, Pink Diamond, Rose Gold

GIA Certified Green Tourmaline Diamonds Ring 18 Karat Yellow Gold Cocktail Ring
Located in München, DE
light flashes. Center stone: afghan tourmaline in mint green Gem Report: GIA (Gemological Institute of
Category

21st Century and Contemporary Italian Cocktail Rings

Materials

Diamond, Tourmaline, Yellow Gold

GIA Certified 4.59 Carat Green Emerald Diamond Ring COLOMBIAN ORIGIN
By Antinori Fine Jewels
Located in Rome, IT
GIA Certified Green Emerald 4.59 Carat Emerald Cut Diamond handmade in solid platinum 18 carats
Category

2010s Italian Modern Solitaire Rings

Materials

Emerald, White Diamond, Diamond, 18k Gold, Platinum

ANGARA GIA Certified Natural Green Sapphire (Teal) Rose Gold Pendant Necklace
By ANGARA INC.
Located in Los Angeles, CA
The GIA certified green sapphire is claw-set and linked to a floral bale by a bezel-set station
Category

21st Century and Contemporary American Modern Pendant Necklaces

Materials

Rose Gold

Angara Gia Certified Natural Green Sapphire 'Teal' Yellow Gold Pendant Necklace
By ANGARA INC.
Located in Los Angeles, CA
The GIA certified green sapphire is claw-set and linked to a floral bale by a bezel-set station
Category

21st Century and Contemporary American Modern Pendant Necklaces

Materials

Yellow Gold

ANGARA GIA Certified Natural Green Sapphire (Teal) White Gold Pendant Necklace
By ANGARA INC.
Located in Los Angeles, CA
The GIA certified green sapphire is claw-set and linked to a floral bale by a bezel-set station
Category

21st Century and Contemporary American Modern Pendant Necklaces

Materials

White Gold

Angara Gia Certified Natural Green Sapphire 'Teal' Rose Gold Pendant Necklace
By ANGARA INC.
Located in Los Angeles, CA
The GIA certified green sapphire is claw-set and linked to a floral bale by a bezel-set station
Category

21st Century and Contemporary American Modern Pendant Necklaces

Materials

Rose Gold

Angara GIA Certified Natural Green Sapphire (Teal) White Gold Pendant Necklace
By ANGARA INC.
Located in Los Angeles, CA
The GIA certified green sapphire is claw-set and linked to a floral bale by a bezel-set station
Category

21st Century and Contemporary American Modern Pendant Necklaces

Materials

White Gold

ANGARA GIA Certified Natural Green Sapphire 'Teal' Yellow Gold Pendant Necklace
By ANGARA INC.
Located in Los Angeles, CA
The GIA certified green sapphire is claw-set and linked to a floral bale by a bezel-set station
Category

21st Century and Contemporary American Modern Pendant Necklaces

Materials

Yellow Gold

Fancy Green Diamond Cocktail Ring
Located in New York, NY
Fancy Green Diamond Cocktail Ring, set in platinum GIA Certified Green pear shape Weight: 2.80 Cts
Category

Vintage 1980s Cocktail Rings

Materials

Diamond, Platinum

GIA Certified 2.49 Carat Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
Sapphire and diamond engagement ring. Natural GIA certified green blue cushion cut 2.49 carat
Category

Mid-20th Century Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

21.10 Carat Green Natural Emerald and Diamond Ring
By Diana M. Jewels
Located in New York, NY
One GIA Certified Green Emerald and Diamond Ring, features 21.10 Carat Green Natural Emerald (GIA
Category

21st Century and Contemporary American Three-Stone Rings

Materials

Emerald, Diamond, Platinum

Peter Suchy GIA Certified 2.24 Carat Sapphire Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
Sapphire and diamond engagement ring. GIA certified green cushion cut sapphire set in platinum with
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Sapphire, Green Sapphire, Platinum

GIA 57.37 Carat Natural Green Beryl Fish Brooch Pendant
Located in New York, NY
The most Rare of all Ocean Species 47.37ct. GIA Certified "Green Beryl" 10.00ct. Diamonds G-H
Category

2010s American Brooches

Materials

Beryl, Diamond, 18k Gold, White Gold

GIA 2.48ct Cushion Cut Natural Emerald Engagement Ring, 18k White Gold
Located in New York, NY
A stunning gemstone ring showcases a 2.48-carat GIA-certified green cushion-cut natural emerald
Category

21st Century and Contemporary Unknown Art Deco Engagement Rings

Materials

Diamond, Emerald, Gold, White Gold

Diana M 9.21cts Oval Shaped Emerald & 6.00cts Diamond Halo Drop Earrings
By Diana M. Jewels
Located in New York, NY
18 kt white gold emerald earrings featuring center 9.21 cts tw GIA certified green oval shaped
Category

Early 2000s American Modern Drop Earrings

Materials

Diamond, Emerald, 18k Gold, White Gold

GIA Certified Natural Fancy Green 1.77 Carat VS2 Radiant Cut Diamond
By GIA
Located in Tustin, CA
We are very pleased to present this stunning Large & Rare GIA Certified Natural Fancy Green 1.77ct
Category

2010s Modern Engagement Rings

Materials

Diamond

GIA Certified Natural Fancy Intense Green 3.09 Carat SI1 Cushion Cut Diamond
By GIA
Located in Tustin, CA
We are very pleased to present this stunning Large & Rare GIA Certified Natural Fancy Intense Green
Category

2010s Modern Engagement Rings

Materials

Diamond

GIA Certified 8.58 Carat Demantoid Necklace w/ Diamond Halo in 18K White Gold
By Gad & Co.
Located in Miami, FL
GIA certified Green Demantoid and diamond halo pendant necklace in 18k white gold. Featuring a 8.58
Category

2010s North American Modern Pendant Necklaces

Materials

Diamond, Garnet, 18k Gold, White Gold

GIA Certified 2.65 Carat Cabochon Omphacite Jade Diamond Halo Platinum Ring
Located in Stamford, CT
Certified green translucent omphacite jade as natural with no indications of impregnation. Mid century 1960
Category

Mid-20th Century Fashion Rings

Materials

Diamond, Jade, Platinum

GIA Certified 0.63 Carat Russian Demantoid Garnet with 'Horse Tail' Inclusions
Located in Los Angeles, CA
collection. Shiny and radiant is always in. Show off your style with this stunning GIA certified green garnet
Category

2010s Unknown Loose Gemstones

Materials

Garnet

GIA Certified 2.5 Carat Oval Cut Tsavorite and Diamond Overpass Crossover Ring
Located in Miami, FL
GIA Certified Green 2.50 Carat Tzavorite and Diamond Overpass 18K Gold and Platinum Ring. Signed by
Category

Late 20th Century North American Retro Cocktail Rings

Materials

Tsavorite, Diamond, Platinum, Yellow Gold, 18k Gold

12.00ct Natural Jade Rose Gold Art Deco Pendant Circa 1930's
Located in Stamford, CT
Handmade hand engraved 14k rose gold pendant set with natural untreated GIA certified green and
Category

Early 20th Century Art Deco Necklace Enhancers

Materials

Jade, 14k Gold, Rose Gold, Gold

GIA Certified 50.6 Carat Oval Emerald Cabochon Diamond Cocktail Ring
By M&V Vanguard Jewelry
Located in New York, NY
GIA Certified 50.6ct Oval Emerald Cabochon Diamond Cocktail Ring GIA#6173253976 Exceptional GIA
Category

2010s American Baroque Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, White Gold, Yellow Gold

GIA Certified 13.63 Carats Green Sapphire
Located in Los Angeles, CA
documented in the accompanying GIA Report. Ideal for creating unique and sophisticated jewelry pieces, this
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Sapphire, Green Sapphire

GIA Certified 13.63 Carats Green Sapphire
GIA Certified 13.63 Carats Green Sapphire
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W 0.46 in D 0.26 in L 0.69 in
GIA Certified 3.10 Carats Unheated Green Sapphire
Located in Los Angeles, CA
. Notably, this Unheated Green Blue Sapphire comes with a GIA Report, providing detailed information about
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Sapphire, Green Sapphire

GIA Certified 3.10 Carats Unheated Green Sapphire
GIA Certified 3.10 Carats Unheated Green Sapphire
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W 0.28 in D 0.22 in L 0.36 in
GIA Certified 3.06 Carats Blue Green Sapphire
Located in Los Angeles, CA
mesmerizing color and innate charm. Identification: Natural Blue Green Sapphire 3.06 carats with GIA Report
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Sapphire, Blue Sapphire, Green Sapphire

GIA Certified 3.06 Carats Blue Green Sapphire
GIA Certified 3.06 Carats Blue Green Sapphire
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W 0.27 in D 0.23 in L 0.37 in
2.59 Ct GiA certified Blueish green Round sapphire
Located in New York, NY
This is 2.59 Ct Natural No Heat Blueish green sapphire that is certified by GiA . It is great mix
Category

2010s African Loose Gemstones

Materials

Green Sapphire

2.59 Ct GiA certified Blueish green Round sapphire
2.59 Ct GiA certified Blueish green Round sapphire
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W 7.9 in D 5.19 in L 8.01 in
1.30ct Oval Teal Green Sapphire GIA Certified Australian
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report
Category

2010s Australian Loose Gemstones

Materials

Green Sapphire

1.30ct Oval Teal Green Sapphire GIA Certified Australian
1.30ct Oval Teal Green Sapphire GIA Certified Australian
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W 0.31 in D 0.15 in L 0.23 in
1.31ct Pear Teal Green Sapphire GIA Certified Unheated
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Unknown Loose Gemstones

Materials

Green Sapphire

1.31ct Pear Teal Green Sapphire GIA Certified Unheated
1.31ct Pear Teal Green Sapphire GIA Certified Unheated
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W 0.31 in D 0.16 in L 0.21 in
1.09ct Oval Teal Green Sapphire GIA Certified Australian
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Australian Loose Gemstones

Materials

Green Sapphire

1.09ct Oval Teal Green Sapphire GIA Certified Australian
1.09ct Oval Teal Green Sapphire GIA Certified Australian
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W 0.29 in D 0.14 in L 0.2 in
GIA Certified 3.05 Carats Unheated Blue Green Sapphire
Located in Los Angeles, CA
. Identification: Natural Unheated Green Sapphire 13.63 carats with GIA Report Carat: Identification: Natural
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Sapphire, Blue Sapphire, Green Sapphire

GIA Certified 3.05 Carats Unheated Blue Green Sapphire
GIA Certified 3.05 Carats Unheated Blue Green Sapphire
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W 0.29 in D 0.24 in L 0.35 in
GIA Certified 3.04 Carats Unheated Blue Green Sapphire
Located in Los Angeles, CA
Blue-Green Sapphire comes with a GIA Report, providing detailed information about its characteristics
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Sapphire, Blue Sapphire, Green Sapphire

GIA Certified 3.04 Carats Unheated Blue Green Sapphire
GIA Certified 3.04 Carats Unheated Blue Green Sapphire
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W 0.33 in D 0.18 in L 0.4 in
GIA Certified 2.19 Carats Unheated Green Blue Sapphire
Located in Los Angeles, CA
Green Blue Sapphire comes with a GIA Report, offering comprehensive details about its characteristics
Category

21st Century and Contemporary Unknown Loose Gemstones

Materials

Sapphire, Blue Sapphire, Green Sapphire

GIA Certified 2.19 Carats Unheated Green Blue Sapphire
GIA Certified 2.19 Carats Unheated Green Blue Sapphire
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W 0.29 in D 0.2 in L 0.29 in
GIA Certified Natural Green Certified Jadeite Jade Pendant
Located in Stamford, CT
Bright green natural untreated certified jadeite jade pendant. Hand carved variegated flower jade
Category

21st Century and Contemporary Necklace Enhancers

Materials

Jade, 14k Gold, Yellow Gold, Gold

2.15ct Octagonal/Emerald Cut Bluish Green Sapphire GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Loose Gemstones

Materials

Green Sapphire

1.31 Carat Pear Teal Green Sapphire GIA Certified Unheated
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Loose Gemstones

Materials

Green Sapphire

1.31 Carat Pear Teal Green Sapphire GIA Certified Unheated
1.31 Carat Pear Teal Green Sapphire GIA Certified Unheated
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W 0.31 in D 0.16 in L 0.21 in
1.30 Carat Oval Teal Green Sapphire GIA Certified Australian
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report
Category

2010s Australian Loose Gemstones

Materials

Green Sapphire

1.30 Carat Oval Teal Green Sapphire GIA Certified Australian
1.30 Carat Oval Teal Green Sapphire GIA Certified Australian
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W 0.31 in D 0.15 in L 0.23 in
1.07ct Oval Teal Green Sapphire GIA Certified Australian Unheated
Located in Toronto, Ontario
This is a stunning GIA Certified Sapphire The GIA report reads as follows: GIA Report Number
Category

2010s Australian Loose Gemstones

Materials

Green Sapphire

1.91ct Oval Green Demantoid GIA Certified Unheated
Located in Toronto, Ontario
This is a stunning GIA Certified Demantoid The GIA report reads as follows: GIA Report Number
Category

2010s Unknown Loose Gemstones

Materials

Alexandrite

1.91ct Oval Green Demantoid GIA Certified Unheated
1.91ct Oval Green Demantoid GIA Certified Unheated
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W 0.36 in D 0.16 in L 0.28 in
3.02ct Round Green Emerald GIA Certified Zambia
Located in Toronto, Ontario
This is a stunning GIA Certified Emerald The GIA report reads as follows: GIA Report Number
Category

2010s Zambian Loose Gemstones

Materials

Emerald

3.02ct Round Green Emerald GIA Certified Zambia
3.02ct Round Green Emerald GIA Certified Zambia
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W 0.38 in D 0.22 in L 0.38 in
2.6ct Oval Green Emerald GIA Certified Zambia
Located in Toronto, Ontario
This is a stunning GIA Certified Emerald The GIA report reads as follows: GIA Report Number
Category

2010s Zambian Contemporary Loose Gemstones

Materials

Emerald

2.6ct Oval Green Emerald GIA Certified Zambia
2.6ct Oval Green Emerald GIA Certified Zambia
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W 0.31 in D 0.21 in L 0.41 in
2.86ct Pear Green Emerald GIA Certified Colombia
Located in Toronto, Ontario
This is a stunning GIA Certified Emerald The GIA report reads as follows: GIA Report Number
Category

2010s Colombian Loose Gemstones

Materials

Emerald

2.86ct Pear Green Emerald GIA Certified Colombia
2.86ct Pear Green Emerald GIA Certified Colombia
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W 0.45 in D 0.21 in L 0.38 in
1.42ct Pear Green Emerald GIA Certified Colombia
Located in Toronto, Ontario
This is a stunning GIA Certified Emerald The GIA report reads as follows: GIA Report Number
Category

2010s Colombian Loose Gemstones

Materials

Emerald

1.42ct Pear Green Emerald GIA Certified Colombia
1.42ct Pear Green Emerald GIA Certified Colombia
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W 0.4 in D 0.18 in L 0.27 in
2.03ct Cushion Green Emerald GIA Certified Zambia
Located in Toronto, Ontario
This is a stunning GIA Certified Emerald The GIA report reads as follows: GIA Report Number
Category

2010s Zambian Contemporary Loose Gemstones

Materials

Emerald

2.03ct Cushion Green Emerald GIA Certified Zambia
2.03ct Cushion Green Emerald GIA Certified Zambia
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W 0.26 in D 0.2 in L 0.37 in
6.88ct Cushion Yellowish Green Peridot GIA Certified
Located in Toronto, Ontario
This is a stunning GIA Certified Peridot The GIA report reads as follows: GIA Report Number
Category

2010s Loose Gemstones

Materials

Peridot

6.88ct Cushion Yellowish Green Peridot GIA Certified
6.88ct Cushion Yellowish Green Peridot GIA Certified
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W 0.44 in D 0.32 in L 0.41 in
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Gia Certified Green For Sale on 1stDibs

Find the exact gia certified green you’re shopping for in the variety available on 1stDibs. Frequently made of Gold, 18k Gold and White Gold, this item was constructed with great care. You can easily find a 63 antique edition and 195 modern creations to choose from as well. Finding the perfect gia certified green may mean sifting through those created during different time periods — you can find an early version that dates to the 20th Century and a newer variation that were made as recently as the 21st Century. Creating a gia certified green has been a part of the legacy of many jewelers, but those produced by Emilio!, Fine Jewels UK and Peter Suchy are consistently popular. While most can agree that any gia certified green from our collection can easily elevate most outfits, but the choice of a Diamond version from the 190 available is guaranteed to add a special touch to your ensemble. See these pages for a cushion cut iteration of this accessory, while there are also oval cut cut and radiant cut cut versions available here, too. There aren’t many items for men if you’re seeking a gia certified green, as most of the options available are for women and unisex.

How Much is a Gia Certified Green?

On average, a gia certified green at 1stDibs sells for $12,000, while they’re typically $560 on the low end and $450,000 for the highest priced versions of this item.
Questions About Gia Certified Green
  • 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 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 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 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.