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Gia Certified Diamond Ring 4 Carats

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GIA Certified 1.18 Carat Kashmir Blue Sapphire And Diamond Ring In 18K W.Gold
By Rewa Jewellery
Located in Bangkok, TH
approximately. It is certified by GRS, the certificate copy is available. Studded with 4 pieces diamonds round
Category

2010s Thai Modernist Solitaire Rings

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

Emilio Jewelry GIA Certified 4.00 Carat Fancy Light Pure Pink Diamond Ring
By Emilio!
Located in New York, NY
: Gia certified 4.00 carats Fancy Light pure pink natural diamond with no overtone. Setting: 32 pink
Category

21st Century and Contemporary Three-Stone Rings

Materials

Pink Diamond

GIA Certified 2 Carat G/VVS1 Radiant Cut Natural Diamond Solitaire Ring 18K Gold
Located in New Delhi, Delhi
-certified 2-carat G/VVS1 radiant cut natural diamond solitaire ring in 18K rose gold, designed to make you
Category

21st Century and Contemporary Italian Contemporary Solitaire Rings

Materials

Diamond, 18k Gold, Rose Gold

1920s 1.01 Carat GIA Cert Diamond Platinum Engagement Ring
Located in New York, NY
This stunning platinum engagement ring from the 1920s, centers a sparkling GIA certified old mine
Category

Early 20th Century Edwardian Engagement Rings

Materials

Diamond, Platinum

GIA Certified 2.40ct Natural Black Opal Diamond Ring 14K Yellow Gold
Located in Media, PA
This is a magnificent GIA-certified natural black opal and diamond ring, masterfully crafted in
Category

1990s Fashion Rings

Materials

Opal, Diamond, Black Opal, 14k Gold, Yellow Gold

GIA Certified 2.64ct Natural Pear Diamond Ruby Ring 14kt
Located in New York, NY
Three Stone Pears & Reds 2.64ct. Natural Pear diamond ring GIA Certificate # 5221172632 J-color
Category

2010s American Three-Stone Rings

Materials

Diamond, Ruby, Platinum

Emilio Jewelry GIA Certified 1.00 Carat Fancy Vivid Purplish Pink Diamond Ring
By Emilio!
Located in New York, NY
with a total of about 0.262 carats, 12 white diamonds with a total of about 0.419 carats, 4 fancy
Category

21st Century and Contemporary Three-Stone Rings

Materials

Pink Diamond

GIA Certified Edwardian Inspired Pink Sapphire Diamond Vertical Ring
Located in Miami, FL
18 karat white gold Edwardian era-inspired Pink Sapphire and Diamond cluster vertical ring. GIA
Category

1990s Malagasy Edwardian Cocktail Rings

Materials

Diamond, Pink Sapphire, 18k Gold, White Gold

Dazzling 1.51ct Diamonds Ring in 14k White Gold - GIA Certified
Located in רמת גן, IL
Dazzling 1.51ct Diamonds Ring in 14k White Gold - GIA Certified This exquisite diamond ring
Category

2010s Israeli Cluster Rings

Materials

Diamond, 14k Gold, White Gold

GIA Certified 4.3 Carat Colombian Emerald 18K Gold Button Sunburst Ring
Located in Miami, FL
GIA Certified 4.30 Carat Oval Cut Minor Oil Natural Colombian Emerald and Round Cut Diamond Halo
Category

Vintage 1980s Retro Cocktail Rings

Materials

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

14 Karat Gold Diamond Ring GIA Certified 0.58 Carat F Color VS1 Clarity Round
Located in Laguna Beach, CA
Round Brilliant Cut, .58 Carat, F Color, Vs1 Clarity,Very Good Cut, GIA Report#: 1176461707. The Diamond
Category

21st Century and Contemporary Unknown Wedding Rings

Materials

Diamond, 14k Gold, Yellow Gold

Harry Winston Tryst Platinum GIA Certified 0.87 E VS1 Diamond Engagement Ring
By Harry Winston
Located in Los Angeles, CA
Round Diamonds E Color VS1 Clarity, 0.81 Carats. 4 Round E-F Color VS1 Round Diamonds, 0.06 Carats. GIA
Category

21st Century and Contemporary European Modern Engagement Rings

Materials

Diamond, Platinum

GIA Certifie3.19 Carat Blue Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
Cornflower blue oval Sapphire and diamond engagement ring. The center sapphire is GIA certified
Category

Late 20th Century Engagement Rings

Materials

Blue Sapphire, Diamond, Sapphire, Platinum

GIA Certified 1.82 Carat Natural Colombian Emerald Ring Set in Platinum
Located in Tokyo, JP
A stunning ring featuring a GIA Certified 1.82 Carat Natural Colombian Emerald and 0.86 Carats of
Category

21st Century and Contemporary Japanese Modern Cocktail Rings

Materials

Diamond, Emerald, Platinum

Elegant 1.38ct Diamonds Ring in 18k White Gold - GIA Certified
Located in רמת גן, IL
Elegant 1.38ct Diamonds Ring in 18k White Gold - GIA Certified Step into timeless elegance with
Category

2010s Israeli Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Vintage GIA Certified Cartier 0.35ct Diamond Solitaire Ring in Platinum
By Cartier
Located in London, England
A beautiful GIA certified vintage Cartier round brilliant cut diamond ring set in platinum. From
Category

2010s Modern Solitaire Rings

Materials

Diamond, Platinum

0.77 Carat GIA Cert Diamond Platinum Engagement Ring
Located in New York, NY
This platinum ring inspired from the Edwardian era, centers a sparkling GIA certified round
Category

20th Century Engagement Rings

Materials

Diamond, Platinum

2.05 Carat GIA Cert Diamond Platinum Engagement Ring
Located in New York, NY
This gorgeous platinum ring from the 1920s is centered with a sparkling GIA certified circular
Category

Early 20th Century Engagement Rings

Materials

Diamond, Platinum

2.01 Carat GIA Cushion Cut Diamond Ring Platinum
Located in New York, NY
GIA Certified: 1.01ct. Cushion Cut Brilliant diamond ring Report: 2145777278 I-color Si-1
Category

2010s American Solitaire Rings

Materials

Diamond, Platinum

14K White Gold GIA Certified 0.60 Asscher Cut Diamond Ring Set
Located in San Francisco, CA
This 14k white gold solitaire features a perfect 0.60 carat Asscher cut natural diamond GIA
Category

21st Century and Contemporary American Solitaire Rings

Materials

Diamond, 14k Gold, White Gold

GIA Certified 5 Carat D/VS1 Diamond Wedding Eternity Band Ring in 18K White Gold
By Gad Co.
Located in Miami, FL
GIA certification. The diamonds carry a total weight of 4.95 carats, D color, and VS1 clarity. The
Category

21st Century and Contemporary Modern Engagement Rings

Materials

Diamond, Gold, 18k Gold, White Gold

GIA Certified .58ct Natural Round Diamond solitaire ring G/Si1
Located in New York, NY
GIA certified .58 carat solitaire diamond ring. Report number 6223327871 Stating the G Color Vs1
Category

2010s American Solitaire Rings

Materials

Diamond, 14k Gold, White Gold

1.03 Carat GIA Cert Diamond Platinum Engagement Ring
Located in New York, NY
This stunning platinum engagement ring is centered with a sparkling GIA certified circular
Category

20th Century Edwardian Engagement Rings

Materials

Diamond, Platinum

GIA Cert 1.00 Carat Diamond Gold Engagement Ring
Located in New York, NY
Made of 18k white gold, this ring centers a sparkling GIA certified round cut diamond that weighs 1
Category

Late 20th Century Contemporary Engagement Rings

Materials

Diamond, 18k Gold, White Gold

1.88 Carat GIA Cert Diamond Platinum Engagement Ring
Located in New York, NY
This stunning platinum engagement ring is centered with a sparkling GIA certified round brilliant
Category

Early 20th Century Edwardian Engagement Rings

Materials

Diamond, Platinum

Platinum Diamond GIA Oval 4.11 Carat Paraiba Tourmaline Engagement Ring
Located in Los Angeles, CA
Handmade Victorian Inspired Round and Emerald Cut Diamond GIA Certified Pariaba Tourmaline Engagement Ring
Category

21st Century and Contemporary American Art Deco Engagement Rings

Materials

Diamond, Tourmaline, Paraiba, 18k Gold, Platinum

GIA Certified Three Stone Canary Fancy Yellow Diamond Engagement Ring
Located in New York, NY
! Two side diamonds add another carat to the total weight making this ring over 4 carats in total
Category

21st Century and Contemporary Modern Engagement Rings

Materials

Diamond, Yellow Diamond, Yellow Gold, Platinum

Gübelin Rock Crystal and GIA Certified Fancy Colored Diamond Ring
By Gubelin
Located in Lucerne, CH
clean rock crystal. Surrounding a GIA certified, oval shape, fancy yellow diamond of 1.46 carats, si1
Category

21st Century and Contemporary Swiss Contemporary Cocktail Rings

Materials

Yellow Diamond, Rock Crystal, Sapphire, Crystal, Diamond, Platinum

0.96 Carat GIA Cert Diamond Platinum Engagement Ring
Located in New York, NY
This stunning platinum ring is centered with a sparkling GIA certified round brilliant cut diamond
Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

0.53 Carat GIA Diamond Sapphire Platinum Engagement Ring
Located in New York, NY
accentuated by sapphire and round cut diamond accents. The ring is 7 1/4, and can be resized. Inventory
Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

1.57 Carat GIA Cert Diamond Platinum Engagement Ring
Located in New York, NY
stone is accentuated by sparkling diamond and triangular cut sapphire accents. The ring is size 8 3/4
Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

GIA Certified 3.2 Carat No Heat Pink Sapphire Oval and Diamond 3 Stone Ring
Located in Miami, FL
This 18K White Gold ring features a GIA Certified 3.2-carat oval cut pink sapphire of Madgascar
Category

21st Century and Contemporary North American Art Deco Three-Stone Rings

Materials

18k Gold, White Gold

GIA Certified 1.86ct Round Brilliant Diamond Tiffany Style Ring 14K White Gold
Located in Aventura, FL
This GIA-certified 1.86 carat Round Brilliant Diamond displays a perfect balance of brilliance
Category

21st Century and Contemporary American Modernist Wedding Rings

Materials

Diamond, White Gold, 14k Gold, Gold

Stunning GIA Cert 2.08 Carat Diamond Platinum Ring
Located in New York, NY
Handcrafted from the Art Deco era, this ring centers a sparkling GIA certified old European
Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Platinum

GIA 6 Carat Antique Cushion Cut Diamond Three-Stone Engagement Ring
Located in Beverly Hills, CA
GIA certified 6.06 carat antique cushion cut diamond G/VS2 with shield shape side stones and pavé
Category

21st Century and Contemporary Unknown Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

Emilio Jewelry GIA Certified Fancy Red Diamond Ring
By Emilio!
Located in New York, NY
Setting: 10 rose-cut water drop white diamonds totaling approximately 0.79 carats, 4 rose-cut round
Category

21st Century and Contemporary Three-Stone Rings

Materials

Pink Diamond

GIA Certified Platinum Tiffany Co. Diamond Solitaire Ring 1.03 ct
By Tiffany Co.
Located in Laguna Beach, CA
is very good. The diamond is very brilliant. Ring size is 5 1/4 and can be sized down to a 5 or up to
Category

Mid-20th Century Solitaire Rings

Materials

Diamond, Platinum

Art Deco 1.05 Carat GIA Cert Diamond Platinum Engagement Ring
Located in New York, NY
This gorgeous platinum engagement ring from the Art Deco era, centers a sparkling GIA certified old
Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Baguette Cut 4 Carat Diamond Cocktail Ring
By LÖF
Located in Los Angeles, CA
The chunky yet elegant Tallulah Ring is set with nearly 4 carats of GIA certified baguette diamonds
Category

2010s American Art Deco Cocktail Rings

Materials

Diamond, 18k Gold

GIA 0.71ct Diamond Engagement Ring
Located in New York, NY
Made of platinum, this ring centers a sparkling GIA certified old mine cut diamond that weighs
Category

20th Century Engagement Rings

Materials

Diamond, Platinum

GIA Certified 3.41 Ct Octagonal Colombian Emerald Diamond Ring 14K Yellow Gold
Located in New York, NY
GIA Certified 3.41 Ct Octagonal Colombian Emerald & Diamond Ring 14K Yellow Gold Extra Fine
Category

2010s Engagement Rings

Materials

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

GIA Certified 5.03 Carat J/VVS1 Round Cut Diamond Ring Half Moon Cut Side Stones
By Gad Co.
Located in Miami, FL
Diamonds totaling 0.84 carats. Item Details: - Type: Three Ring - Metal: 18K White Gold - Weight: 4.42
Category

2010s North American Modern Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Exquisite GIA Certified No-Heat Burma Ruby and Diamond Ring
Located in New York, NY
Elevate your jewelry collection with this stunning, one-of-a-kind ring, featuring a GIA certified
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Ruby, Gold, 14k Gold, Yellow Gold

GIA 27.49 Carat Cabochon Tourmaline Rubellite Diamond Platinum Cocktail Ring
Located in Stamford, CT
. The stone is accented with 4 round cut diamonds on each side of the stone. Certified by the GIA as a
Category

Mid-20th Century Cocktail Rings

Materials

Diamond, Tourmaline, Platinum

GIA Certified Lavender Sapphire and Diamond Ring 14K White Gold
Located in beverly hills, CA
carats and is certified by GIA. Currently a size 7 and may be resized. Circa 2000 DATE OF MANUFACTURE
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

Platinum GIA Certified E Color 0.90 Carat Round Diamond Bridal Set
Located in Los Angeles, CA
% Platinum, 5% Iridium. Stones- GIA Certified Round Diamond E Color SI2 Clarity 0.90 Carats. 76 Round
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

GIA Certified 7.86 No Heat Blue Sapphire Three Stone Diamond Platinum Ring
Located in Los Angeles, CA
Sapphire 7.86 Carats. 2 Round Diamonds H-I Color SI1 Clarity 0.63 Carats. GIA Report Number 6234326902
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

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

GIA Certified 1.14 Carat Burmese, No Heat Spinel Ring Set in Platinum
Located in Tokyo, JP
A beautiful halo ring featuring a GIA Certified 1.144 Carat Natural, No Heat, Burmese Spinel and
Category

21st Century and Contemporary Japanese Modern Fashion Rings

Materials

Diamond, Spinel, Platinum

GIA Certified 2.50 Oval Diamond Eternity Oval Diamond Shank Platinum 950 Ring
By FERRUCCI
Located in New York, NY
GIA Certified 2.50 Carat Oval diamond, F color, VS1 clarity, Triple Excellent Cut, Symmetry and
Category

2010s American Contemporary Bridal Rings

Materials

White Diamond, Platinum

HARAKH GIA Certified 4.00 Carat Pear, Brilliant Cut 18KT Raindrop Bridal Ring
By Harakh
Located in New York, NY
This bridal diamond ring has a GIA certified 0.73 carat pear shaped center stone surrounded
Category

21st Century and Contemporary Indian Modern Cluster Rings

Materials

Diamond, White Gold, 18k Gold

GIA Certified 2.5ct Emerald Cut Colombian Emerald Diamond Ring 18kt White Gold
Located in New York, NY
Diamonds: 40 Pieces , approximate 4 Carat Platinum 12.8 gm Emerald: 2.5 Carat GIA certificate report
Category

2010s Engagement Rings

Materials

Diamond, Emerald, White Gold

Angara GIA Certified Natural Amethyst Ring with Diamonds in 14K Solid Gold
By ANGARA INC.
Located in Los Angeles, CA
This beautiful cocktail ring in 14k solid gold is sure to entice you. The captivating round GIA
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Diamond, Amethyst, 14k Gold, Gold

Emilio Jewelry Gia Certified Marquise Fancy Color Exotic Diamond Ring
By Emilio!
Located in New York, NY
, orange diamond 0.37 carat, 15 round white diamonds totaling about 0.13 carat, 4 fancy colored diamonds
Category

21st Century and Contemporary Cocktail Rings

Materials

Blue Diamond

Stunning 2.36 Carat GIA Cert Diamond Platinum Engagement Ring
Located in New York, NY
This stunning platinum engagement ring is centered with a sparkling GIA certified round brilliant
Category

Vintage 1970s Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA .99 Carat Princess Cut Diamond Platinum Three-Stone Engagement Ring
Located in Stamford, CT
Diamond engagement ring. GIA certified .99ct princess cut diamond set in a platinum three stone
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Rare GIA Certified Burma Cabochon Sapphire Diamond Platinum Ring Size 6.5 Ring
By OGI Ltd
Located in New York, NY
0.75 carats. 4. Investment Value and Auction Market Demand: GIA-certified Burma cabochon sapphires
Category

Late 20th Century American Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Art Deco GIA 1.96 carat diamond platinum engagement ring
Located in Beverly Hills, CA
This Art Deco ring from the 1930s features a 1.96 carat old mine cut diamond, certified by GIA
Category

Vintage 1930s Art Deco Engagement Rings

Materials

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

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Gia Certified Diamond Ring 4 Carats For Sale on 1stDibs

Find an expansive variety of gia certified diamond ring 4 carats available on 1stDibs. These distinct designs — crafted with great care and often made from Platinum, Gold and 18k Gold — can elevate any look. Our selection of items includes 1337 vintage examples as well as 4092 contemporary versions. Our inventory is broad and distinctive, with accessories on offer that were made as long ago as the 19th Century to those produced as recently as the 21st Century. Our collection of gia certified diamond ring 4 carats includes designs that are universally popular, but Modern and Contemporary styles, specifically, are sought with frequency. Many examples in our inventory of these items are appealing no matter their origins, but Antinori Fine Jewels, Roman Malakov and J. Birnbach produced popular versions that are worth a look. Today, if you’re looking for round cut gia certified diamond ring 4 carats and are unable to find the perfect match, our selection also includes oval cut and cushion cut alternatives. There aren’t many items for men in our collection of gia certified diamond ring 4 carats, as most of the options available are for women.

How Much are Gia Certified Diamond Ring 4 Carats?

On average, gia certified diamond ring 4 carats at 1stDibs sell for $20,002, while they’re typically $1,100 on the low end and $475,940,000 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.  

Finding the Right Rings for You

Antique and vintage rings have long held a special place in the hearts of fine jewelry lovers all over the world.

No matter their origin or specific characteristics, rings are timeless, versatile accessories. They’ve carried deep meaning since at least the Middle Ages, when diamond rings symbolized strength and other kinds of rings were worn to signify romantic feelings or to denote an affiliation with a religious order. Rings have also forever been emblematic of eternity.

Over time, rings have frequently taken the form of serpents, which have long been associated with eternal life, health and renewal. Italian luxury jewelry house Bulgari has become famous for its widely loved Serpenti motif, for example, and its Serpenti ring, like the other accessories in the collection, began as an homage to jewelry of the Roman and Hellenistic eras. The serpent is now a popular motif in fine jewelry. Jewelry devotees have long pined for rings adorned with reptiles, thanks to antique Victorian rings — well, specifically, Queen Victoria’s illustrious engagement ring, which took the form of a gold snake set with rubies, diamonds and an emerald (her birthstone). Designs for Victorian-era engagement rings often featured repoussé work and chasing, in which patterns are hammered into the metal.

Engagement rings, which are reliably intimidating to shop for, are still widely recognized as symbols of love and commitment. 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

The most collectible antique engagement rings and vintage engagement rings are those from the Victorian, Edwardian and Art Deco eras. Named for the monarchies of the four King Georges, who in succession ruled England starting in 1714 (plus King William’s reign), antique Georgian rings, be they engagement rings or otherwise, are also coveted by collectors. Pearls, along with colored gemstones like garnets, rubies and sapphires, were widely used in Georgian jewelry. The late-1700s paste jewelry was a predecessor to what we now call fashion or costume jewelry

The Art Nouveau movement (1880–1910) brought with it rings inspired by the natural world. Antique Art Nouveau rings might feature depictions of winged insects and fauna as well as women, who were simultaneously eroticized and romanticized, frequently with long flowing hair. Art Deco jewelry, on the other hand, which originated during the 1920s and ’30s, is by and large “white jewelry.” White metals, primarily platinum, were favored over yellow gold in the design of antique Art Deco rings and other accessories as well as geometric motifs, with women drawn to the era’s dazzling cocktail rings in particular.

Whether you’re hunting down a chunky classic for a Prohibition-themed cocktail party or seeking a clean contemporary design to complement your casual ensemble, find an exquisite collection of antique, new and vintage rings on 1stDibs.

Questions About Gia Certified Diamond Ring 4 Carats
  • 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.