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Igi Certified Rings

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GIA Certified 1.50 Carat Round Cut White Gold Ring
By Antinori Fine Jewels
Located in Rome, IT
clarity with none fluorescence; it is a triple excellent diamond. This IGI certified ring is currently
Category

2010s Italian Modern Solitaire Rings

Materials

Diamond, White Gold

IGI Certified 3.73Carat Ruby & Diamond Ring in 18K Gold
Located in KOWLOON, HK
detail make this IGI certified ring a truly remarkable piece. Its vintage-inspired design, with the halo
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold

IGI Certified 3.15Carat Blue Sapphire & Diamond Ring in 18K White Gold
Located in KOWLOON, HK
Introducing a magnificent piece of jewelry, this IGI certified ring is a true epitome of elegance
Category

2010s Hong Kong Modern Cocktail Rings

Materials

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

IGI Certified 2.91 Carat Ruby & Diamond Ring in 18K White Gold
Located in KOWLOON, HK
can be treasured for a lifetime. This IGI certified ring, with its impressive deep red Natural ruby
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Certified Yellow Diamond White Diamond 18K Gold Engagement Ring
By HYT Jewelry
Located in Hong Kong, HK
) - Made of 18K White and Yellow Gold - IGI certified - Ring Size US6 (can be sized upon request) Yellow
Category

2010s Hong Kong Contemporary Engagement Rings

Materials

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

Certified Colombian Emerald Platinum Wedding Ring
By HYT Jewelry
Located in Hong Kong, HK
, clarity VVS-VS) - Made of PT900 - IGI Certified - Ring Size US6 (can be sized upon request) Emerald is
Category

2010s Hong Kong Contemporary Wedding Rings

Materials

Diamond, White Diamond, Emerald, Platinum

Certified Colombian Emerald White Diamond 18K Gold Cocktail Ring
By HYT Jewelry
Located in Hong Kong, HK
- IGI certified - Ring Size US6 (can be sized upon request) Emerald is the birthstone for May and the
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

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

Certified Yellow Diamond White Diamond 18K Gold Engagement Ring
By HYT Jewelry
Located in Hong Kong, HK
- IGI certified - Ring Size US6 (can be sized upon request) Yellow diamond primarily originates from
Category

2010s Hong Kong Contemporary Engagement Rings

Materials

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

Certified Yellow Diamond White Diamond 18K Gold Cocktail Ring
By HYT Jewelry
Located in Hong Kong, HK
Yellow Gold - IGI certified - Ring Size US6 (can be sized upon request) Yellow diamond primarily
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

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

Certified Colombian Emerald White Diamond 18K Gold Cocktail Ring
By HYT Jewelry
Located in Hong Kong, HK
of 18K White Gold - IGI Certified - Ring Size US6 (can be sized upon request) Emerald is the
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

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

Certified Colombian Emerald White Diamond 18K Gold Engagement Ring
By HYT Jewelry
Located in Hong Kong, HK
(color E-F, clarity VVS-VS) - Made of 18K White Gold - IGI certified - Ring Size US6 (can be sized upon
Category

2010s Hong Kong Contemporary Engagement Rings

Materials

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

Certified Colombian Emerald Rose-Cut Diamond 18K Cocktail Ring
By HYT Jewelry
Located in Hong Kong, HK
-VS) - Made of 18K White Gold - IGI Certified - Ring Size US6 (can be sized upon request) Emerald is
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

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

Certified Yellow Diamond White Diamond 18K Gold Cocktail Ring
By HYT Jewelry
Located in Hong Kong, HK
(color E-F, clarity VVS-VS) - Made of 18K White and Yellow Gold - IGI certified - Ring Size US6 (can be
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

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

Certified Yellow Diamond White Diamond 18K Gold Cocktail Ring
By HYT Jewelry
Located in Hong Kong, HK
of 18K White and Yellow Gold - IGI certified - Ring Size US6 (can be sized upon request) Yellow
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

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

Certified Yellow Diamond White Diamond 18K Gold Cocktail Ring
By HYT Jewelry
Located in Hong Kong, HK
(color E-F, clarity VVS-VS) - Made of 18K White and Yellow Gold - IGI certified - Ring Size US6 (can be
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

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

Certified Yellow Diamond and White Diamond in 18K Gold Cocktail Ring
By HYT Jewelry
Located in Hong Kong, HK
, clarity VVS-VS) - 18K White and Yellow Gold - IGI certified - Ring Size US6 (can be sized upon request
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

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

Certified Colombian Emerald White Diamond 18K Gold Wedding Ring
By HYT Jewelry
Located in Hong Kong, HK
- IGI Certified - Ring Size US6 (can be sized upon request) Emerald is the birthstone for May and the
Category

2010s Hong Kong Contemporary Wedding Rings

Materials

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

Certified Colombian Emerald Yellow Diamond White Diamond 18K Engagement Ring
By HYT Jewelry
Located in Hong Kong, HK
carat (color E-F, clarity VVS-VS) - Made of 18K White and Yellow Gold - IGI certified - Ring Size US6
Category

2010s Hong Kong Contemporary Engagement Rings

Materials

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

Certified Colombian Emerald White Diamond 18K Three-Stone Engagement Ring
By HYT Jewelry
Located in Hong Kong, HK
-VS) - Made of 18 Karat White Gold - IGI certified - Ring Size US6 (can be sized upon request
Category

2010s Hong Kong Contemporary Three-Stone Rings

Materials

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

Solitare Round Diamond ring 7ct IGI certified
Located in Burnley, GB
Single stone round diamond ring 7.01cts Platinum setting with pave shoulders IGI Certified H colour
Category

21st Century and Contemporary English Contemporary Solitaire Rings

Materials

Diamond, Platinum

Solitare Round Diamond ring 5ct IGI certified
Located in Burnley, GB
Single stone round diamond ring 5.01cts Platinum setting with pave shoulders 0.33cts IGI Certified
Category

21st Century and Contemporary English Contemporary Solitaire Rings

Materials

Diamond, Platinum

IGI Certified 1.01 Carat Solitaire Diamond Ring
Located in Palermo, IT
Certified 1,01 ct Solitaire Diamond Ring colour E ,Si2 round cut.Italian manifacture 1960 ca. 18kt
Category

Vintage 1950s Italian Modern Solitaire Rings

Vintage Wolfers 2.78 Carats IGI certified diamond ring
Located in Uccle, BE
center 2.78 Carat natural brilliant cut diamond ( IGI certified, K color - Si1 purity) and 6 brilliant
Category

Antique 1890s Belgian Modern Wedding Rings

Materials

Diamond, Gold, 18k Gold

IGI Certified 4.00 Carats of Diamond Solitaire Ring
Located in Massafra, IT
An exquisite solitaire ring in 18k gold , glamour and chic design, with a pear cut diamond of 4
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, 18k Gold

GIA & IGI Certified 0.93 Carat Diamond Cocktail Ring
Located in Kowloon, HK
: 0.32 carats ➛ IGI certified Diamond 3: ➛ Stone Shape: Round ➛ Stone Color: Fancy Yellow ➛ Stone
Category

2010s Asian Wedding Rings

Materials

Pink Diamond, Yellow Diamond, White Diamond, Diamond, White Gold, 18k Gold

IGI Certified Platinum Natural Sapphire and Diamond Ring
Located in Washington Depot, CT
IGI Certified Vintage Platinum Natural Sapphire and Diamond Ring Size 8 Front of the ring
Category

20th Century Cocktail Rings

Materials

Diamond, Sapphire, Platinum

IGI Certified 1 Carat Cushion Diamond Solitaire Ring
Located in Napoli, Italy
graded I color Vs1. it is accompanied by an IGI certificate nr. 485130737 and features the cert. number
Category

Late 20th Century Engagement Rings

Materials

Diamond, 18k Gold, Silver

IGI Certified Multi-Coloured Natural Fancy Diamond Ring
By HYT
Located in Hong Kong, HK
This ring has an opulent look with a Rare selection of Natural color diamonds including yellow
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

Diamond, 18k Gold

IGI Certified 7.80 Carat Tanzanite Diamonds Gold Ring
Located in Marcianise, Marcianise (CE)
, ITEMS AT AUCTIONS ,ONGOING PROMOTIONS AND ITEMS ON SALES. Shiny ring in 14kt white gold mounted with a
Category

Late 20th Century Italian Retro More Rings

Materials

Diamond, Tanzanite, 14k Gold, White Gold

IGI Certified 1.00 Carats Natural Diamond 18K Gold Ring
Located in Massafra, IT
elegance on your outfit. Stunning ring come in 18K gold with a IGI certified Natural Diamonds of 1,00 carat
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, 18k Gold

IGI Certified 10.00 Carats Natural Diamond 18K Gold Ring
Located in Massafra, IT
18K gold with IGI Certified 10,00 Carats of Natural Diamonds in perfect emerald cut , H color SI2
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, 18k Gold

IGI Certified White Gold Diamonds and Sapphire Classic Ring
Located in Esch-Sur-Alzette, LU
This IGI Certified White Gold Classic Ring exudes elegance and sophistication, boasting a timeless
Category

20th Century French Modern Engagement Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

9 Carat Emerald Cut Diamond Engagement Ring IGI Certified
Located in New York, NY
LALA EMERALD CUT DIAMOND ENGAGEMENT RING 18K WHITE GOLD EMERALD-CUT HALO SEMI ETERNITY BAND IGI
Category

2010s American Engagement Rings

Materials

Emerald, Diamond, 18k Gold, White Gold

IGI Certified 8.43ct Natural Sapphires 14K Pink Gold Ring
Located in Hong Kong, HK
truly captivating and sophisticated piece by Top Crown Jewelry. This ring is certified by IGI
Category

21st Century and Contemporary Hong Kong Fashion Rings

Materials

Sapphire, Gold, 14k Gold, Rose Gold

IGI Certified 6.98ct Natural Sapphires 14K Rose Gold Ring
Located in Hong Kong, HK
certified by IGI laboratory, report number: 25J2407323 For more information, please see the attached
Category

21st Century and Contemporary Hong Kong Fashion Rings

Materials

Sapphire, Gold, 14k Gold, Rose Gold

IGI Certified 1.17ct Sapphire 0.72ct Natural Diamonds Platinum Ring
Located in Hong Kong, HK
is a One-of-a-kind piece, supplied to you by the house of Top Crown Jewelry. This ring is certified
Category

21st Century and Contemporary Hong Kong Cocktail Rings

Materials

Diamond, Sapphire, Platinum

IGI Certified 1.00 Carats Diamonds 18k Gold Solitaire Ring
Located in Massafra, IT
An exquisite design from love collection in 18k gold with a IGI certified natural diamond heart
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, 18k Gold

IGI Certified Diamond Ring 0.29 Carats 14K Rose Gold
Located in Laguna Niguel, CA
It comes with the original IGI Certificate All Gemstones are Natural Diamonds = 0.29 Carats Cut
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

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

IGI Certified 8.01 Carats Diamond 18K Gold Solitaire Ring
Located in Massafra, IT
So gorgeous solitaire ring with a contemporary design , so modern , sophisticated style. Ring come
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, 18k Gold

IGI Certified 5 Ct of Diamond on Solitaire Ring
Located in Massafra, IT
Exclusive solitaire ring in 18k with round brilliant cut diamond 5 ct F/SI2, and two baguettes
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, 18k Gold

IGI Certified 19.00 Carat Tourmaline Tsavorite Diamond Gold Ring
By Diamond Stars Jewelry, Inc.
Located in New York, NY
, sizable. The ring weighs 11.3 grams The ring comes with an IGI Appraisal Report.
Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

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

1.01 Carat White Diamond Ring SI2 Clarity IGI Certified
Located in Kowloon, HK
Shape: Oval ➛ Stone Color: F ➛ Stone Clarity: SI2 ➛ Stone Weight: 1.01 carats ➛ IGI certified ♦ SIDE
Category

2010s Asian Engagement Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

1.00 Carat White Diamond Ring SI2 Clarity IGI Certified
Located in Kowloon, HK
Shape: Oval ➛ Stone Color: G ➛ Stone Clarity: SI2 ➛ Stone Weight: 1.00 carats ➛ IGI certified ♦ SIDE
Category

2010s Asian Engagement Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

IGI Certified Ruby and Diamond 14K Yellow Gold Ring
By Privosa Fine Jewelry
Located in Houston, TX
-I color, and I1-I2 clarity. This ring is accompanied by the IGI certificate card.
Category

2010s American Modern Fashion Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

IGI Certified Emerald and Diamond 14k Yellow Gold Ring
By Privosa Fine Jewelry
Located in Houston, TX
! The ring is accompanied by an IGI certificate grading card.
Category

2010s American Modern Cocktail Rings

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

Privosa IGI Certified Round Halo Engagement Ring 1 CTTW
By Privosa Fine Jewelry
Located in Houston, TX
occasion. This ring is accompanied by the IGI certificate card which guarantees quality.
Category

2010s American Modern Engagement Rings

Materials

Diamond, 14k Gold, White Gold

IGI Certified 1.01 Carat White Diamond Ring SI2 Clarity
Located in Kowloon, HK
Shape: Radiant ➛ Stone Color: H ➛ Stone Weight: 1.01 carat ➛ Clarity: SI2 ➛ IGI certified ♦ SIDE STONE
Category

2010s Asian Engagement Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

IGI Certified 1.01 Carat Yellow Diamond Ring SI2 Clarity
Located in Kowloon, HK
➛ Stone Shape: Round ➛ Stone Color: Y-Z ➛ Stone Weight: 1.01 carats ➛ Clarity: SI2 ➛ IGI certified ♦ SIDE
Category

2010s Asian Engagement Rings

Materials

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

1.02 Carat White Diamond Ring SI2 Clarity IGI Certified
Located in Kowloon, HK
➛ Clarity: SI2 ➛ IGI certified ♦ SIDE STONE DETAILS ➛ Side White diamonds - 100 pcs - 0.523 cts ♦ GROSS
Category

2010s Asian Engagement Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

IGI Certified 4.02 Carat Padparadscha Sapphire Oval Customized Ring
By Antinori Fine Jewels
Located in Rome, IT
Presenting a masterpiece of craftsmanship, this exquisite ring features a 4.02-carat Padparadscha
Category

2010s Unknown Contemporary Cocktail Rings

Materials

Sapphire, Padparadscha Sapphire , 18k Gold, Rose Gold

IGI Certified White Gold Ring with Verdelite Tourmaline and Diamonds
Located in Esch-Sur-Alzette, LU
The IGI Certified White Gold Ring is a captivating masterpiece that seamlessly blends
Category

20th Century Italian Artisan Cocktail Rings

Materials

Diamond, Tourmaline, 18k Gold, White Gold

IGI Certified Fancy Color Diamond 18k Gold Cocktail Ring
By HYT
Located in Hong Kong, HK
This Ring features three rare Fancy Color diamonds, Fancy Greenish Yellow, Brownish Yellow, and
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

Brown Diamond, Yellow Diamond, White Diamond, Diamond, 18k Gold

Very Clean IGI Certified 8.09 Carat Natural Sapphire Ring
Located in Firenze, FI
beautiful 18k white gold ring with natural untreated 8.09 carat blue sapphire ; this stone is from
Category

21st Century and Contemporary Italian Fashion Rings

Materials

Sapphire, 18k Gold

IGI Certified Fancy Color Diamond 18k Gold Cocktail Ring
By HYT
Located in Hong Kong, HK
This Ring features unique shades of Natural Fancy Yellow diamonds placed methodically to give an
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

Diamond, Yellow Diamond, 18k Gold

IGI Certified 14K White Gold Ruby and Diamond Ring
By Privosa Fine Jewelry
Located in Houston, TX
A stunning cocktail ring crafted in luxurious 14 karat white gold with 11 round natural ruby stones
Category

2010s American Modern Cocktail Rings

Materials

Diamond, Ruby, 14k Gold, White Gold

IGI Antwerp Certified 4.75 Carat Oval Red Ruby Ring
By Antinori Fine Jewels
Located in Rome, IT
An exquisite and substancial 4.01 carat oval ruby diamond ring The main stone has an incredible
Category

2010s Italian Modern Solitaire Rings

Materials

Diamond, White Diamond, Ruby

IGI Certified 10KT Yellow Gold 1 cttw Diamond Band Ring
Located in New York, NY
. Product Features: Diamond Type: IGI Certified Natural White Diamonds Diamond Count: 9 Round -Cut
Category

21st Century and Contemporary Indian Modern Fashion Rings

Materials

White Diamond, 10k Gold, Yellow Gold

IGI certified 2.70 Carats natural white Diamonds ring circa 1980
Located in Uccle, BE
diamond of approximately 1.00 Carats (IGI Certified colorless color/ E-F - VS1 purity), 10 full cut
Category

Vintage 1980s European Bridal Rings

Materials

Diamond, White Diamond, Gold, 18k Gold

IGI Certified 4.85 Carat Diamond Polki Ring Rose cut Diamond Statement Ring
Located in Delhi, DL
Diamond Statement Ring Certified 4.85ctw Natural Rose Cut Diamond Ring Polki Pave diamond Ring 925
Category

2010s Indian Contemporary Engagement Rings

Materials

Diamond, Sterling Silver

IGI Certified 3.00 Carat Natural Diamond 18k Gold Solitaire Ring
Located in Massafra, IT
Indulge in the Splendor: Exquisite 3,00 Carats G / VS1 IGI Certified Oval Shape Diamonds Encased in
Category

21st Century and Contemporary Italian Contemporary Solitaire Rings

Materials

Diamond, 18k Gold, White Gold

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Igi Certified Rings For Sale on 1stDibs

On 1stDibs, there are many options to choose from in our inventory of igi certified rings. All of the items for sale were constructed with extraordinary care, often using gold, white gold and 18k gold. Our collection of these items for sale includes 18 vintage editions and 209 modern creations to choose from as well. Our collection is diverse and broad-ranging, and pieces in stock date back to the 19th Century while others were produced as recently as the 21st Century. Our collection of igi certified rings 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, Gems and Jewels UK and Privosa Fine Jewelry produced popular versions that are worth a look. While most can agree that any pick from our collection easily elevates most outfits, but the choice of diamond versions from the 197 available is guaranteed to add a special touch to your ensemble. A selection of round cut, oval cut and emerald cut can be found today on these pages. Most of our igi certified rings for sale are for women, but there are 110 pieces available to browse for men.

How Much are Igi Certified Rings?

Prices for igi certified rings start at $1 and top out at $315,000 with these rings, on average, selling for $5,000.

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 Igi Certified Rings
  • 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
    Vera Wang engagement rings are certified by an official gemological laboratory, and they have a certificate. A certified engagement ring means that the diamond has undergone a quality analysis.