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Type 2a Gia Certified Diamonds

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Victorian 14K Gold Vintage 1.07Ct Rose Cut GIA Certified Diamond Engagement Ring
Located in Addison, TX
accompanied with a GIA diamond certificate on the center stone. This ring can be sized up or down 3 sizes for
Category

Antique Early 1900s Unknown Victorian Cluster Rings

Materials

Diamond, 14k Gold, Yellow Gold

Vivid Red 2.13ct Ruby Diamond Three Stone Ring Set in Platinum, GIA Certified
Located in Toronto, Ontario
Indications of Heating Origin: Mozambique **** Gem Type:  Diamond Number of Stones: 2 Total Diamond
Category

2010s Canadian Contemporary Three-Stone Rings

Materials

Diamond, Ruby, Platinum

GIA Certified 1.45cts. Total Weight Diamond Stud Earrings with a Halo Set in 14k
By Gregory Mikaelian Sons, Inc.
Located in Los Angeles, CA
Beautiful GIA Certified 1.45cts. total weight diamond stud earrings with a halo set in 14k
Category

21st Century and Contemporary American Contemporary Stud Earrings

Materials

Diamond, 14k Gold, White Gold

GIA Certified Old Cut Diamond with Sapphire Emerald Engagement Ring in 18k Gold
Located in Bangkok, TH
. total weight) Size: US7 (resizable) Center Gemstone Type: Diamond (Certified GIA) Shape: Old Cut Round
Category

21st Century and Contemporary Thai Art Deco Engagement Rings

Materials

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

GIA Certified Old Cut Diamond with Sapphire Emerald Engagement Ring in 18k Gold
Located in Bangkok, TH
. total weight) Size: US7 (resizable) Center Gemstone Type: Diamond (Certified GIA) Shape: Old Cut Round
Category

21st Century and Contemporary Thai Art Deco Engagement Rings

Materials

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

GIA and GRS Certified 3.10 Carat Unheated Ruby Diamond Platinum Ring for Women
Located in Los Angeles, CA
. Details Ring Overview SKU 4427 Center Stone Ruby Side Stones Diamonds Metal Type Platinum & 18K Yellow
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Ruby, Platinum, Gold, 18k Gold, Yellow Gold

Edwardian 3.63Ct No Heat GIA Certified Olive Green Sapphire w/Diamond Halo Ring
Located in Addison, TX
piece is accompanied with a GIA diamond certificate on the center stone. This ring can be sized up or
Category

Vintage 1910s Unknown Edwardian Cocktail Rings

Materials

Diamond, Green Sapphire, 14k Gold, Yellow Gold

GIA Certified 14k White Gold 1 1/5 Cttw Diamond Oval Halo Shaped Engagement Ring
Located in New York, NY
gold, this ring features a 1/2 carat natural round center diamond; GIA certified for quality and
Category

21st Century and Contemporary Indian Modern Bridal Rings

Materials

White Diamond, Diamond, White Gold, 14k Gold

J. Birnbach 8.01 Carat GIA Certified I VS2 Emerald Cut Diamond and Platinum Ring
By J. Birnbach
Located in New York, NY
GIA Diamond Grading Report 2195790533. Sizing is complementary with purchase. Type : Diamond Ring
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

GIA Certified 0.38 Old European Cut Diamond Center, G in Color and SI1 in Clarit
Located in Los Angeles, CA
This is a vintage engagement ring with a GIA certified 0.38 old european cut diamond center
Category

Late 20th Century American Art Deco Engagement Rings

Materials

Diamond, 14k Gold

Tiffany Co. Platinum 1.34Ct GIA Certified Solitaire Engraved Engagement Ring
Located in Addison, TX
offer it to our 1st Dibs family. This piece is accompanied with a GIA diamond certificate on the
Category

Vintage 1920s Unknown Art Deco Solitaire Rings

Materials

Diamond, Platinum

GIA Certified Brilliant Cut 4.07 Carat H VS1 Platinum with 2 Baguettes 1.09
Located in Los Angeles, CA
2013 Specifications: main stone: GIA Certified Brilliant Cut 4.07 CARAT (GIA #1142622513
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Platinum

10.11 Carat GIA Cert D Internally Flawless Diamond
By J. Birnbach
Located in New York, NY
This magnificent loose diamond weighs in at 10.11cts. It is a GIA certified, D color, Internally
Category

21st Century and Contemporary Unknown More Jewelry

Materials

Diamond

Art Deco 14K Two Tone Vintage Three Stone Ring GIA Certified Engagement Ring
Located in Addison, TX
an even more dramatic sparkle. The three center piece diamonds all are GIA certified. Ranging from
Category

Vintage 1920s Unknown Art Deco Three-Stone Rings

Materials

Diamond, 14k Gold, White Gold, Yellow Gold

GIA Fancy Light Yellow Diamond with Emerald and Diamond Halo Art Deco Style Ring
Located in Bangkok, TH
) Center Gemstone Type: Diamond (GIA Certified) Shape: Emerald Cut Average Color: Fancy Light Yellow
Category

21st Century and Contemporary Thai Art Deco Engagement Rings

Materials

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

Vintage Platinum GIA Untreated Colombian Emerald Diamond Tulip Dangle Earrings
Located in Montclair, NJ
features two gorgeous, Colombian green emeralds that have been certified by GIA. The emeralds weigh
Category

Mid-20th Century Art Deco Dangle Earrings

Materials

Diamond, Emerald, 18k Gold, Platinum

GIA 1.30 Carat Emerald Cut Diamond Fancy Halo Engagement Ring
Located in Addison, TX
and filigreed sides that give the ring a classic vintage vibe. The 1.06 carat GIA certified emerald
Category

20th Century American Art Deco Engagement Rings

Materials

Diamond, Gold, 18k Gold, White Gold

Vintage Platinum 1.60ctw D VVS1 GIA Marquise Baguette Diamond Engagement Ring
Located in Montclair, NJ
gorgeous, GIA certified, marquise cut diamond solitaire prong set at its center. That center stone weighs
Category

Vintage 1960s Engagement Rings

Materials

Diamond, Platinum

Vintage Platinum Line Tennis Bracelet w/ 8.50ctw GIA Square Sapphires Diamonds
Located in Montclair, NJ
8.50 carats total, and are GIA certified as being 100% natural Australian sapphires with no indications
Category

Mid-20th Century Tennis Bracelets

Materials

Diamond, Sapphire, Platinum

Antique Platinum GIA Old European Cut Diamond Ring, 3.58 Carat
Located in Addison, TX
Center Diamond Details: GIA CERTIFIED Center Diamond - Report #5192534881 Shape: Old European Cut Carat
Category

Early 20th Century Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

Vintage Platinum GIA Ceylon No Heat Cushion Sapphire Diamond Engagement Ring
Located in Montclair, NJ
crafted in solid platinum. This vintage ring features a gorgeous, GIA certified, elongated cushion cut
Category

Vintage 1980s Engagement Rings

Materials

Diamond, Sapphire, Platinum

Vintage Platinum GIA Burma No Heat Cushion Sapphire Diamond Engagement Ring
Located in Montclair, NJ
solid platinum. This vintage ring features a gorgeous, GIA certified, cushion cut sapphire solitaire
Category

Vintage 1960s Engagement Rings

Materials

Diamond, Sapphire, Platinum

Vintage Platinum GIA Burma No Heat Cushion Sapphire Diamond Engagement Ring
Located in Montclair, NJ
solid platinum. This vintage ring features a gorgeous, GIA certified, cushion cut sapphire solitaire
Category

Vintage 1960s Engagement Rings

Materials

Diamond, Sapphire, Platinum

GIA 1.50 Carat Fancy Yellow Oval Diamond 3 Stone Platinum Engagement Ring
By Belrose Estate Jewelers
Located in Santa Barbara, CA
, vibrant, canary-yellow oval diamond weighing 1.50 carats, boasting a GIA pedigree stating natural fancy
Category

21st Century and Contemporary Contemporary Three-Stone Rings

Materials

Diamond, Yellow Diamond, Platinum

Vintage Platinum 2.4ctw GIA NO HEAT Purple Sapphire Diamond Engagement Ring
Located in Montclair, NJ
- NO HEAT - 2.10ct (exact - certified) ** See Certification Details Below for Complete Info ** (2
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Purple Sapphire, Platinum

Antique Art Deco Platinum 4.18ctw GIA Diamond Sapphire Etched Filigree Bracelet
Located in Montclair, NJ
period. It features a beautiful, GIA certified, old European cut diamond prong set at its center. This
Category

Vintage 1920s Art Deco Chain Bracelets

Materials

Diamond, Sapphire, Platinum

New Platinum 2.08ctw GIA Oval Brilliant Cut Diamond Three Stone Engagement Ring
Located in Montclair, NJ
features a classic three-stone style claw prong set with a breathtaking, GIA certified, oval brilliant cut
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

Platinum 14k Gold 3.06ctw GIA Pink Sapphire Diamond Halo Cluster Stud Earrings
Located in Montclair, NJ
brilliant cut pink sapphire at its center. The GIA certified sapphires total 2.47 carats in weight and
Category

2010s American Stud Earrings

Materials

Diamond, Pink Sapphire, 14k Gold, Rose Gold, Platinum

18k Gold 1.83ctw GIA Light Yellow Cushion Brilliant Cut Diamond Engagement Ring
Located in Montclair, NJ
This gorgeous classic diamond engagement ring features a stunning, GIA certified, 1.44 carat light
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 18k Gold

18k Gold 1.83ctw GIA Light Yellow Cushion Brilliant Cut Diamond Engagement Ring
Located in Montclair, NJ
This gorgeous classic diamond engagement ring features a stunning, GIA certified, 1.44 carat light
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 18k Gold

18k Gold 13.43 Carat GIA Colombian Emerald and Butterfly Diamond Link Bracelet
Located in Montclair, NJ
green emerald stones are carefully prong set and 2 are certified by GIA certified as being 100% natural
Category

Late 20th Century Link Bracelets

Materials

Diamond, Emerald, 18k Gold

Vintage 14K Gold 1.07ct GIA European Diamond w/ Baguette Channel Pendant Chain
Located in Montclair, NJ
featuring a fine quality, GIA certified, old European cut diamond neatly prong set at the center with two
Category

Vintage 1960s Art Deco Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

18k White Gold 8.50ctw GIA Ceylon Sapphire Diamond Halo Flower Cluster Earrings
Located in Montclair, NJ
sapphire at its center. The GIA certified sapphires total approximately 3.70 carats in weight and display
Category

1990s Stud Earrings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Art Deco Platinum GIA Aquamarine and Diamond Wide Open Filigree Brooch Pin
Located in Montclair, NJ
deco period. This brooch features a GIA certified emerald cut natural aquamarine milgrain bezel set at
Category

Vintage 1920s Art Deco Brooches

Materials

Aquamarine, Diamond, Platinum

Antique Art Deco Platinum GIA Natural Pearl Diamond Strand Bracelet Necklace Set
Located in Montclair, NJ
platinum and diamond mosaic centerpiece connected to 7 strands of GIA certified NATURAL saltwater pearls
Category

Early 20th Century Art Deco Beaded Necklaces

Materials

Diamond, Natural Pearl, Platinum

Vintage 14k Gold 5.10ct GIA Pear Emerald Diamond Tear Drop Pendant Necklace
Located in Montclair, NJ
. The pendant features a breathtaking and large, 5.10 carats, GIA certified natural emerald stone
Category

Late 20th Century Unknown Pendant Necklaces

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

Antique Platinum GIA Pave Ruby Diamond Large Heart Pendant 14k Gold Chain
Located in Montclair, NJ
randomly selected and certified by GIA. These gorgeous stones stand out with their rich and vivid red color
Category

Vintage 1930s Pendant Necklaces

Materials

Diamond, Ruby, 14k Gold, White Gold, Platinum

GIA 3.02 Carat Princess Cut Diamond Micro Pavé 18 Karat White Gold Ring
Located in Beverly Hills, CA
Are you the type of person that wants something that no one else has? This striking diamond micro
Category

2010s Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Tiffany Co. 1985 18k Gold Platinum GIA Round Coral Diamond Button Earrings
By Tiffany Co.
Located in Montclair, NJ
yellow gold and .950 platinum by Tiffany & Co. The earrings feature a pair of GIA certified, round
Category

Vintage 1980s American Stud Earrings

Materials

Coral, Diamond, 18k Gold, Yellow Gold, Platinum

14k White Gold 1.00ct GIA Cushion Diamond Engagement Ring w/ Half Moon Baguettes
Located in Montclair, NJ
-- Laboratory: GIA Report Number: 5181001273 Stone Type: Natural Diamond Stone Shape: Cushion Brilliant
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Gold

14k White Gold 1.00ct GIA Cushion Diamond Engagement Ring w/ Half Moon Baguettes
Located in Montclair, NJ
features a GIA certified center stone. The center stone is a stunning, 1.00 carat, cushion brilliant cut
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Gold

14k White Gold 1.00ct GIA Cushion Diamond Engagement Ring w/ Half Moon Baguettes
Located in Montclair, NJ
-- Laboratory: GIA Report Number: 5181001273 Stone Type: Natural Diamond Stone Shape: Cushion Brilliant
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, White Gold

Platinum 18k Gold 6.07ctw GIA Pear Fancy Yellow Diamond Bypass Moi et Toi Ring
Located in Montclair, NJ
and 18k yellow gold and features a pair of large, GIA certified, pear cut diamonds - one fancy yellow
Category

21st Century and Contemporary Unknown Modern Cocktail Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum

VICTORIAN 1850 GIA Bar Brooch In 15Kt Gold With Natural Pearls Diamonds
Located in Miami, FL
prepared by a GIA certified gemologist stating all the characteristics of this piece of jewelry, the exact
Category

Antique 1850s English High Victorian Brooches

Materials

Natural Pearl, White Diamond, Pearl, Diamond, 15k Gold, Silver, Yellow G...

Platinum 18k Gold 3.47ct GIA Fancy Yellow White Cushion Diamond 3 Stone Ring
Located in Montclair, NJ
with an 18k yellow gold center basket that carries a stunning, GIA certified, fancy yellow diamond
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

Platinum 18k Gold 3.47ct GIA Fancy Yellow White Cushion Diamond 3 Stone Ring
Located in Montclair, NJ
with an 18k yellow gold center basket that carries a stunning, GIA certified, fancy yellow diamond
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

New Platinum GIA 5.89ctw No Heat Sapphire Old European Cut Diamond Sideways Ring
Located in Montclair, NJ
Heat -5.03ct (exact - certified) ** See Certification Details Below for Complete Info ** (2) Natural
Category

21st Century and Contemporary American Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Estate 18k White Gold 3.54ct GIA Round Brilliant Diamond Engagement Ring w/ Halo
Located in Montclair, NJ
features a GIA certified center stone that weighs exactly 3.54 carats with N color and eye-clean VS2
Category

Late 20th Century Unknown Solitaire Rings

Materials

Diamond, 18k Gold, White Gold

GIA 2.03ct Diamond Emerald Ruby and Sapphire Dangle Earrings in 18k White Gold
Located in Bangkok, TH
total) Backing: Push Back Center Gemstones Type: Diamond (GIA Certified) Shape: Cushion Average Color
Category

21st Century and Contemporary Thai Art Deco Dangle Earrings

Materials

Diamond, Emerald, Ruby, Sapphire, 18k Gold, White Gold

Shining 1.04 ct Cushion Cut Diamond 3 Stone Ring in 18k Yellow Gold – GIA
Located in רמת גן, IL
Shining 1.04 ct Cushion Cut Diamond 3 Stone Ring in 18k Yellow Gold – GIA Certified This
Category

2010s Israeli Three-Stone Rings

Materials

Diamond, 18k Gold, Yellow Gold

GIA 2.25 Ct. Diamond and Emerald Art Deco Style Drop Earrings in 18K Gold
Located in Bangkok, TH
. Length: 41 mm. Weight: 7.72 g. (approx. in total) Backing: Push Back Drop Gemstones Type: Diamond (GIA
Category

21st Century and Contemporary Thai Art Deco Drop Earrings

Materials

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

18 Karat Gold GIA 1.51 Carat Princess Cut Diamond Sapphire 3-Stone Ring
Located in Montclair, NJ
. This center diamond is GIA certified, weighs exactly 1.51 carats, and shows a lot of fire with its near
Category

2010s American Art Deco Three-Stone Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

New Fine 18k White Gold 1.69ctw GIA Round Brilliant Cut Diamond Engagement Ring
Located in Montclair, NJ
. This ring comes with the original GIA certification for the center diamond, is a brand new ring which
Category

2010s American Art Deco Engagement Rings

Materials

Diamond, 18k Gold, White Gold

18 Karat Gold GIA 1.51 Carat Princess Cut Diamond Sapphire 3-Stone Ring
Located in Montclair, NJ
. This center diamond is GIA certified, weighs exactly 1.51 carats, and shows a lot of fire with its near
Category

2010s American Art Deco Three-Stone Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

Antique Victorian 18k Gold 0.76ct GIA Mine Cut Diamond Curb Link Chain Bracelet
Located in Montclair, NJ
wire work pattern and neatly set with a GIA certified diamond at its center. The fine old mine cut
Category

Antique Late 19th Century Unknown Late Victorian Chain Bracelets

Materials

Diamond, Pearl, 18k Gold, Yellow Gold

The Lilly Signature GIA Diamond and Ruby Engagement Ring in 18K Rose Gold
Located in Bangkok, TH
) Size: US7 (resizable) Center Gemstones Type: Diamond (GIA Certified) Shape: Lilly Cut Average Color: K
Category

21st Century and Contemporary Thai Art Deco Engagement Rings

Materials

Diamond, Ruby, 18k Gold, Rose Gold

GIA Diamond with Emerald Art Deco Style Engagement Ring in 18k White Gold
Located in Bangkok, TH
: 3.39 g. (approx. total weight) Size: US7 (resizable) Center Gemstone Type: Diamond (GIA Certified
Category

21st Century and Contemporary Thai Art Deco Engagement Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

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Type 2a Gia Certified Diamonds For Sale on 1stDibs

There is a broad range of type 2a gia certified diamonds for sale on 1stDibs. These distinct designs — crafted with great care and often made from 18k Gold, Gold and Platinum — can elevate any look. Find a collection of 1 vintage versions or 19 modern creations for a more contemporary example of these cherished accessories. Our collection, which features older pieces for sale from the 20th Century and newer versions made as recently as the 21st Century, has proven very popular over the years. Our collection of type 2a gia certified diamonds includes designs that are universally popular, but Modern and Art Deco styles, specifically, are sought with frequency. Many examples in our inventory of these items are appealing no matter their origins, but Antinori Fine Jewels and Tamir produced popular versions that are worth a look. A selection of emerald cut, pear cut and oval cut can be found today on these pages. If you’re browsing the variety of type 2a gia certified diamonds for sale, you’ll find that many are available today for women, but there are still pieces to choose from for men.

How Much are Type 2a Gia Certified Diamonds?

On average, type 2a gia certified diamonds at 1stDibs sell for $513,000, while they’re typically $90,000 on the low end and $1,800,000 for the highest priced versions of this item.

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.