30 Carat Ring

A sparkling Art Deco Diamond Antique Engagement Ring features a .30ct. apx. European cut diamond with SI1 clarity and H color. This spectacular diamond mounting has .80ct. apx T.W. o...

A beautiful Heart Shape diamond mounted in platinum. This diamond engagement ring has a gorgeous 1 carat heart shape brilliant diamond in its center. This diamond has a color and c...

Beautiful Victorian era late 1800s .30 carat old European cut diamond filigree 14K white gold ring.

Approximately 30 carats, emerald, statement ring, diamond ring.

5.5 Size 30 ct Ruby 2 ct Diamond Ring set in 14K Gold and Silver. The Ruby is set with Polki Diamonds all around and a line of pave diamonds. The ring shank is nicely carved and has ...

A size 6 1/2 18K yellow gold Ammonite style ring featuring a bezel set Tsavorite Garnet weighing .30 carats.

Approximately 30 carats, cushion, statement ring, diamond ring.

Approximately 30 carats, cushion, statement ring, diamond ring.

18 Karat White Gold 30 Carat Aquamarine Diamond Ruby Cocktail Ring A sturdy ring build to last.

Thirty Carat Royal Blue Sapphire Diamond Costume Jewelry Cluster Ballerina Ring Magnificent Royal Blue Manmade 30 Carat Sapphire and Lab CZ Diamond Winston Style Cluster Cocktail ri...

We invite you to see more of our collection from Cober Jewellery at 1stDibs! You can type Cober Jewellery in the search bar to view more of our webshop. “Engraved Cluster” with a ye...

This D Color Internally Flawless diamond ring is a testament to extraordinary rarity and unmatched craftsmanship. Featuring a GIA-certified diamond of the highest D color grade, this...

This exquisite custom made ring is made of 18kt white gold. It showcases a rare 30Ct natural Brazilian emerald of a blue-ish/green color (certified by IGI, certificate copy attached ...

Art Deco ring in 18Kt white gold (hallmark: eagle) set with an emerald cut emerald weighing approximately 1.30 Cts, surrounded with old cut diamond which total weight is apx 0.65 Ct,...

The delicacy of the setting, as soft and light as a veil on the skin, allows the diamond to be admired from every angle. This piece is made of 30 diamonds. Diamond color : E Diamon...

The delicacy of the setting, as soft and light as a veil on the skin, allows the diamond to be admired from every angle. This piece is made of 30 diamonds. Diamond color : E Diamon...

"Black Sand" Perfectly blends nature with modern innovation, lightness, and durability. Delicately crafted in 18K yellow gold with a 13mm Tahitian Pearl and .30 ct of F VS1 brilliant...

This Yvel ring features a natural very light green irregularly shaped faceted sapphire set in 18k yellow gold. The ring is size 6.75. The sapphire measures approximately 23x21 mm. (0...

Cognac colored Diamond. VS set in an 18 Carat yellow gold ring, surrounded with a total of 30 Brilliant-cut Diamonds F/E with a total weight of 0,70 ct.

Cognac colored Diamond. VS set in an 18 Carat yellow gold ring, surrounded with a total of 30 Brilliant-cut Diamonds F/E with a total weight of 0,70 ct.

14K White gold diamond engagement ring. The cluster style ring is centered with a GIA certified, 1.00 carat round diamond accented by 38 small round diamonds weighing approximately ....

The center diamond is flanked by two stunning trillion cut diamonds that match the center stones color and clarity and weigh apprx. .30 carats each. The ring has both platinum and 1...

The shoulders each have 2 baguettes that are approximately .05 carats each and one round bezel set diamond with an additional weight of .05 carats, making the total additional weight...

There are 6 accent diamonds along the platinum shank weighing a total of .30 carats. The ring is signed along the inner shank and is currently sized at 6 1/4.

Edwardian pink topaz platinum and eighteen karat yellow gold ring with diamonds surrounding the topaz. The pink topaz has an estimate weight of 15 carats and the diamonds weigh appro...

The last detail is the pairing of matching pear shape aquamarines which weigh .30-.50 carats each. This ring is cast from 18k rose gold and platinum.

The accent diamonds weigh .25 carats total with an SI1-I1 clarity and H color. The slightly purplish-red rubies weigh .30 carats total.

The center diamond is set in a halo of pink diamonds with a total weight of .30 carat. The ring also has .33 carat of white diamonds going down the shank.

Three diamond stackable bands in 14 karat yellow gold, 14 karat white gold and 14 karat rose gold. The rings consist of 6 diamonds on each ring with .10 carat total (.30 carat on the...

Platinum Art Deco Ring Containing a GIA Graded 11.88mm Freshwater Natural Pearl Flanked by 2 Navette Shape Diamonds Weighing Approximately .70 Carats and Accented by 37 Old European ...

A Victorian 14 karat yellow gold and sapphire solitaire ring. This ring features a six prong mounting set with a round cut sapphire weighing approximately .30 carat and with a tapere...

The ring is a size 7 and weighs 3.5 grams Era: Art Deco 1920's Hallmarks: F28 Composition: Platinum Primary Stone: Natural Blue Oval Cut Sapphire Stone Carat: .51 Carats Accent...

14k yellow gold ring featuring an emerald cut smoky quartz weighing approximately 30cts total. The ring is a size 9 and can be sized up or down. Measurements are available upon requ...

Tiffany & Co Enchanted garden diamond flower platinum ring. 26 round brilliant cut diamonds set in a platinum setting. 26 round brilliant cut F-G VS diamonds, Approximate .30cts Si...

A stunning 18k white Gold ring with aquamarine, diamonds, and rubies. This beautiful ring from 1970 features a large natural Aquamarine of the greatest quality with an approximate w...

Material: 14k white gold Diamond Details: Approximately 5ctw of round brilliant diamonds. Diamonds are G/H in color and VS in clarity Gemstone Details: 30ct oval cabochon emerald Rin...

Art Deco diamond engagement ring. Center round diamond set in square setting with geometric designs set with round diamonds to the sides and top and bottom. 1 round Old European Q-R...

This is a very beautiful platinum ring mounting with melee diamonds 0.30ct in total weight with stamp of TACORI brand. You can use any gem as a center stone est. fit 0.55 - 0.65ct (...

It features 16, single-cut diamonds and one full-cut center stone measuring .13 carats, VS in clarity, and H in color. In total, this ring measures .30 carats and is a size 5.

A classic, Cocktail ring Large size Colombian cabochon approximately 30 Carat Emerald and Diamond Ring, Estate with no color enhancement.

PLEASE CHECK OUT THE HD VIDEO! This is a two piece set. Both original CARTIER from the 1990's. No boxes or papers, just the beautiful jewelry! The bangle has about 30Cts of diamonds ...

A 14 karat yellow gold, sapphire an diamond navette statement ring. This ring features a prong set, oval cut sapphire weighing approximately 1 carat surrounded by full cut round diam...

Style and elegance are embodied in this gorgeous platinum ring by Van Cleef & Arpels that is crafted in a classic ring design. The sensational ring's top sparkles with a stunning F-c...

.30ct Round diamonds ring Adjustable wear Size 6-7. G- color Vs-2 clarity 5.6mm wide 5.7 grams. Durable Make. 18kt. yellow gold

Classic diamond and platinum engagement ring by Cartier. It features high grade round brilliant cut diamonds throughout the sides with a .30ct central stone, E color, VS1 clarity, a...

The 18 karat rose gold diamond band is stunning with bright white round brilliant diamonds. This ring has .30 carats total diamond weight and VS2 clarity and G color diamonds.

Size 6.5 Complimentary sizing as needed Emerald, .30 carats Diamonds, .13 carats each

Designed as two intertwined snakes, each with a flush set old European cut diamond, approximately 0.30 carats total, G/H color and VS to SI clarity With petite round cut ruby eyes, ...

The 18 karat rose gold diamond band is stunning with bright white round brilliant diamonds. This ring has .30 carats total diamond weight. The beautiful 18 karat rose gold looks stun...

The 18 karat rose gold diamond band is stunning with bright white round brilliant diamonds. This ring has .30 carats total diamond weight. The beautiful 18 karat rose gold looks stun...

Faceted square cut aquamarine measures 22mm x 18.5mm (estimated at 30 carats) is accented with six estimated 0.05 carat round brilliant cut diamonds.

​A stunning Pomellato ring, made of rose gold features blue topaz, diamond and ruby. ​It’s a conversational piece that will stand out in any environment. The 30 cts oval faceted blue...

Dressed up or down, this botanical ring will be a delightful addition to any ensemble! Composed of 14k white gold, this NEW band showcases an open cut face which features a curved le...

Whether it is worn solo or paired with your engagement piece, this stunning wedding band will be a gorgeous symbol of your everlasting love and marriage vows. This NEW ring showcases...

Vintage Intertwined Classic Yin-Yang Ring .30ct Natural Round diamonds ring. Diamonds: Vs-2 clarity, H-color. 20mm wide top deck size Depth of ring 9mm Size 7 and can be sized. ...

14 Karat Yellow Gold Old European Cut .30 Carat Diamond Engagement Ring Size 6.25 Metal: 14k yellow gold Weight: 2.24 grams Diamond: Old European Cut, approx. .30 carat I-J VS Band ...

Behold the magnificence of this IGI certified 25.49ct Ruby & 3ct Natural Diamonds Ring in 18K White Gold, a true embodiment of luxury and sophistication. This exquisite piece of jewe...

This stunning ring features a 4.49-carat pear-shaped diamond, graded Light Yellow (W-X) with VS1 clarity, offering a luminous and warm glow. With its impressive 16-millimeter length,...

A French Art Deco masterpiece! Created in France in the 1920s, this natural saltwater pearl and diamond ring is a geometric tour de force and one of the most gorgeous natural pearl r...

Cast from 18-karat gold, these exquisite earrings are handset with 1.87 carats Zambian Emerald, 4.08 carats Arizona turquoise and 0.75 carats of sparkling diamonds. FOLLOW SPECTRUM ...

Antique Sapphire Bombe Ring 18ct Gold & Platinum Circa 1910 Step back into the elegance of the Edwardian era with this stunning bombe/domed oval-shaped ring, designed to provide e...

Age: Antique Era: Art Deco Era, Circa 1930 Primary Stone: Diamond Primary Stone Weight: Approx. 3.00-Carats Primary Stone Cut: Old European Cut Primary Stone Color: J Color Primary ...

A very gorgeous and beautiful, Blue Sapphires & Ruby Stud Earrings set in 18K White Gold & natural Diamonds. The weight of the Blue Sapphires is 6.54 carats. The Blue Sapphires are o...

1930s Art Deco Diamond Platinum Engagement Ring. Dating back to the 1930s Art Deco period, this distinctive engagement ring was hand finished with unique chase work.  The center dia...

Halo Ring in solid 18K Yellow Gold with natural Blue Sapphire and 8 old European cut Diamonds set in Platinum settings. Hallmarked 18K, tested 18K Yellow Gold, European made ca 1930...

The Following Item we are offering is this Beautiful Rare Important 18KT Gold Fancy Black Tahitian Pearl Diamond Necklace. Necklace is comprised of 19 Magnificent 12MM High Luster La...

Details: Pretty 14K white gold filigree 1/2 carat diamond ring from the 1920's! The filigree has beautiful sweet flowers in the 14K gold. The height of the ring sits up 5.6mm, and t...

This is an absolutely stunning platinum Art Deco engagement ring. The ring is solid platinum and has been around for nearly a century, and is ready to by a symbol of true love for ye...