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GIA 1.50 Carat French Cut Diamond Ring in Black Rhodium 18K Yellow Gold
Located in Los Angeles, CA
Beautiful 1.51 ct. F VS2 white diamond French cut. Handmade in 18k yellow gold and black rhodium. Ring size 6. Comes with GIA certificate.
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Yellow Gold, Rhodium

GIA 1.50 Carat Each Asscher Cut Diamond Dangle Earrings in 18K Yellow Gold
Located in Los Angeles, CA
Beautiful 3.01 ct. I-J IF-VS white diamond asscher cuts. Handmade in 18k yellow gold. Both stones come with GIA certificates.
Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, Yellow Gold

GIA White Diamond Round Eternity Band Ring in Black Rhodium 18K Yellow Gold
Located in Los Angeles, CA
Beautiful 3.90 ct. I VVS-VS white diamond rounds. Total of 13 stones, each one is 0.30 ct. Handmade in black rhodium and 18k yellow gold. Ring size 6.75+. Each stone comes with a...
Category

21st Century and Contemporary Band Rings

Materials

White Diamond, Yellow Gold, Rhodium

GIA 2 Carats Each Radiant Yellow Diamond Bezel Stud Earrings in 18K Yellow Gold
Located in Los Angeles, CA
Gorgeous 4.64 ct. S-X VVS radiant cut diamonds. Handmade in 18k yellow gold with push back setting. GIA certificates included.
Category

21st Century and Contemporary Stud Earrings

Materials

Yellow Diamond, Yellow Gold

GIA White Diamond Emerald Cut Sideways Eternity Band Ring in 18K White Gold
Located in Los Angeles, CA
Gorgeous 5.66 ct. HI IF-VS2 white diamond emerald cuts. Total of 14 stones, each one is 0.40 ct. Handmade in 18k white gold. Ring size 6.5. GIA certificates included.
Category

21st Century and Contemporary Band Rings

Materials

White Diamond, White Gold

Ruby and and White Diamond Three Row Bracelet in 18K White Gold
Located in Los Angeles, CA
Beautiful bright red ruby and white diamond rounds. Handmade in 18k white gold. Length is 7".
Category

21st Century and Contemporary Retro Bracelets

Materials

White Diamond, Ruby, White Gold

GIA White Diamond Emerald Cut Sideways Eternity Band in 18K White Gold
Located in Los Angeles, CA
Gorgeous 5.33 ct. HI VS white diamond emerald cuts. Total of 13 stones, each weighing 0.40 ct. The stones are set sideways which gives the eternity band a more contemporary and tre...
Category

21st Century and Contemporary Band Rings

Materials

White Diamond, White Gold

Three Stone Round Diamond Pendant Necklace in 14k White Gold
Located in Los Angeles, CA
Beautiful 0.10 ct. good quality white diamond rounds in a handmade 14k white gold mounting. Length of chain is 16".
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, White Gold

White Diamond Two Hearts Bracelet in 18K White Gold
Located in Los Angeles, CA
Beautiful 0.09 ct. white diamond rounds in this two heart design bracelet. Handmade in 18k white gold. Length is 7.25".
Category

21st Century and Contemporary Chain Bracelets

Materials

White Diamond, White Gold

GIA Fancy Pink Marquise and White Diamond Ring in Platinum 18K Rose Gold
Located in Los Angeles, CA
Absolutely stunning GIA 3.06 ct. fancy pink diamond marquise with 0.50 ct. good quality white diamond rounds. Handmade in platinum and 18k rose gold. Ring size 8+. GIA certificate...
Category

21st Century and Contemporary Solitaire Rings

Materials

White Diamond, Rose Gold, Platinum

Pinkish Purple Amethyst Cocktail Ring in 18 Karat Rose Gold
Located in Los Angeles, CA
Beautiful ring featuring 3.50 cts of unique pinkish purple amethyst rounds in a handmade 18k rose gold mounting. This design elongates the fingers. There is a designer stamp, but i...
Category

21st Century and Contemporary Cocktail Rings

Materials

Amethyst, Rose Gold

White Diamond Cluster Link Bracelet in 14k White Gold
Located in Los Angeles, CA
Gorgeous 3.04 ct. white diamond round cluster links handmade in 14k white gold. Length of bracelet is 7.25.
Category

21st Century and Contemporary Link Bracelets

Materials

White Diamond, White Gold

Red Garnet and White Diamond Cluster Ring in 14K Yellow Gold
Located in Los Angeles, CA
Beautiful red garnet ovals with good quality white diamond rounds. Handmade in 14k yellow gold. Ring size 4.75.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Garnet, Yellow Gold

Pink Kunzite and White Diamond Cocktail Ring in 18K White Gold
Located in Los Angeles, CA
Beautiful 22.65 ct. pink kunzite emerald cut with 0.51 ct. good quality white diamond rounds. Handmade in 18k white gold. Ring size 7.5.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Kunzite, White Gold

Ruby and White Diamond Design Ring in 14K White Gold
Located in Los Angeles, CA
Beautiful 1.75 ct. ruby oval with 1.00 ct. good quality white diamond rounds. Handmade in 14k white gold. Ring size 7.25.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Ruby, White Gold

Emerald and White Diamond Cocktail Ring in 14K White Gold
Located in Los Angeles, CA
Beautiful 2.54 ct. emerald octagon with 0.45 ct. good quality white diamond round pave. Handmade in 14k white gold. Ring size 3.75.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Emerald, White Gold

Estate Tiffany Co White Diamond Necklace in Platinum
By Tiffany Co.
Located in Los Angeles, CA
Beautiful estate Tiffany & Company white diamond necklace handmade in platinum. Length is 15".
Category

21st Century and Contemporary Link Necklaces

Materials

White Diamond, Platinum

Estate Angela Cummings for Tiffany Co Positive and Negative Inlay Bangle
By Angela Cummings
Located in Los Angeles, CA
Gorgeous Angela Cummings for Tiffany & Company positive and negative black inlay bangle handmade in
Category

21st Century and Contemporary Bangles

Materials

Yellow Gold

Estate Tiffany Co White Diamond Round Ring in Platinum
By Tiffany Co.
Located in Los Angeles, CA
Beautiful estate Tiffany & Company white diamond round band ring. Handmade in platinum. Ring size
Category

21st Century and Contemporary Band Rings

Materials

White Diamond, Platinum

Estate Paloma Picasso for Tiffany Co Malachite Cabochon Earrings in 18K Gold
By Paloma Picasso for Tiffany Co.
Located in Los Angeles, CA
Gorgeous estate Tiffany & Company earrings by Paloma Picasso. Nice big bright green malachite
Category

21st Century and Contemporary Lever-Back Earrings

Materials

Malachite, 18k Gold

Estate Tiffany Co. White Diamond Tennis Necklace in Platinum
Located in Los Angeles, CA
Gorgeous estate Tiffany & Company tennis necklace with 87 white diamonds that are fine quality and
Category

21st Century and Contemporary More Necklaces

Materials

White Diamond, Platinum

Tiffany Co. Charm Bracelet with White Diamonds in Platinum
By Tiffany Co.
Located in Los Angeles, CA
Gorgeous Tiffany & Company charm bracelet with 6 diamond star charms in platinum. A fun addition
Category

21st Century and Contemporary Charm Bracelets

Materials

Diamond, White Diamond, Platinum

Tiffany Co. Two-Tone Gold and Diamond Bracelet
By Tiffany Co.
Located in Los Angeles, CA
Stunning Tiffany & Company two tone gold bracelet with good quality, white diamonds weighing 3
Category

21st Century and Contemporary Bangles

Materials

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

White Diamond Emerald Cut East West Bezel Eternity Band in 18K Yellow Gold
Located in Los Angeles, CA
Gorgeous 4.88 ct. white diamond emerald cuts. total of 10 stones. Handmade in 18k yellow gold. Ring size is 5.5.
Category

21st Century and Contemporary Band Rings

Materials

White Diamond, Yellow Gold

GIA 2 Carat White Diamond Heart Pendant Necklace in 18K Yellow Gold
Located in Los Angeles, CA
Gorgeous 2.03 ct. I SI2 white diamond heart shape. Handmade in 18k yellow gold. Length is 18". Comes with GIA certificate.
Category

21st Century and Contemporary Pendant Necklaces

Materials

White Diamond, Yellow Gold

GIA White Diamond Emerald Cut and Round Eternity Band Ring in 18K White Gold
Located in Los Angeles, CA
Beautiful 8.00 ct. HI VVS-SI white diamond emerald cuts and rounds. This band is perfect for those that can't decide between shapes. It's a great deal because you get two bands in ...
Category

21st Century and Contemporary Band Rings

Materials

White Diamond, White Gold

Estate Kabana White Mother of Pearl and Diamond Bracelet in 14k Yellow Gold
By Kabana
Located in Los Angeles, CA
Gorgeous Kabana bracelet with white mother of pearl and 0.50 ct. good quality, white, and bright diamond rounds. Handmade in 14k yellow gold in the USA. This item retails for much ...
Category

21st Century and Contemporary Link Bracelets

Materials

Diamond, Pearl, Yellow Gold

Blue Sapphire Cabochon Oval and White Diamond Ring in 14 Karat Yellow Gold
Located in Los Angeles, CA
Beautiful deep blue sapphire oval cabochon weighing 8.50 cts with good quality, white, and bright diamond rounds weighing 0.25 cts. Ring size is 6.5. Handmade in 14k yellow gold.
Category

21st Century and Contemporary Dome Rings

Materials

White Diamond, Blue Sapphire, Yellow Gold

Blue Sapphire Oval and White Diamond Cocktail Ring in Platinum
Located in Los Angeles, CA
Beyond stunning blue sapphire oval weighing 15.47 cts with a deep bright blue crystal. Surrounded by 1.91 cts of good quality diamonds. Handmade platinum moutning in size 6.25. This ...
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Blue Sapphire, Platinum

Ceylon GIA Blue Sapphire Cabochon Heart and Diamond Ring in 18 Karat Yellow Gold
Located in Los Angeles, CA
Hard to find Ceylon blue sapphire cabochon heart that weighs 8.50 cts with GIA certificate. This stone has some heat that only enhances it's already deep blue color. Handmade 18k ye...
Category

21st Century and Contemporary Dome Rings

Materials

Diamond, Blue Sapphire, Yellow Gold

H. Stern Emerald Oval and White Diamond Pendant Necklace in 18 Karat Yellow Gold
By H. Stern
Located in Los Angeles, CA
Beautiful H. Stern estate pendant necklace showcasing a nice big emerald oval and good quality white diamond rounds. Made in 18k yellow gold and 16" long. Excellent condition.
Category

21st Century and Contemporary Pendant Necklaces

Materials

White Diamond, Emerald, Yellow Gold

Fancy Deep Brown Pink Radiant Diamond and White Diamond Ring in Platinum and 18k
Located in Los Angeles, CA
Gorgeous 0.86 ct fancy deep brown pink diamond radiant with 2.33 ct of good quality white diamond marquise, pear shapes, and rounds in a handcrafted 18k yellow gold and platinum moun...
Category

21st Century and Contemporary Cluster Rings

Materials

White Diamond, Pink Diamond, Platinum

Estate Black Opal Oval and White Diamond Round Cocktail Ring in Platinum
Located in Los Angeles, CA
High luster and colorful black opal oval weighing 1.15 cts with 0.53 cts of good quality, white, and bright diamond rounds in a handmade platinum mounting. Ring size is 6.5. Excell...
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Opal, Platinum

Peridot Oval and White Diamond Round Cocktail Ring in Platinum
Located in Los Angeles, CA
Stunning estate cocktail ring with oval peridot weighing 7.80 cts with 1.48 cts of bright white diamond rounds in a handmade platinum mounting. Ring size is 6.5. Excellent condition.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Peridot, Platinum

Estate White Diamond Round Band in Platinum
Located in Los Angeles, CA
Classic estate diamond band with 2.50 cts of good quality, white, and bright diamond rounds. Handmade in platinum in size 6.5.
Category

21st Century and Contemporary Band Rings

Materials

White Diamond, Platinum

White Diamond, Ruby, and Turquoise Flower Brooch in 18 Karat Yellow Gold
Located in Los Angeles, CA
Stunning estate flower brooch featuring white diamond rounds, rubies, and turquoise in a handcrafted 18k yellow gold mounting.
Category

Late 20th Century Brooches

Materials

White Diamond, Ruby, Turquoise, Yellow Gold

Estate 18 Karat Yellow Gold Chain Necklace with Multi-Color Stones
Located in Los Angeles, CA
Gorgeous estate chain necklace featuring 120.60 grams of gold with cabochons of various stones like blue chalcedony, cornelian chysophase, and onyx. Chunky layered look with a classy...
Category

21st Century and Contemporary Link Necklaces

Materials

Chrysoberyl, Onyx, Yellow Gold

Estate 18 Karat Yellow Gold Necklace Chain
Located in Los Angeles, CA
16" long estate 18k yellow gold chain necklace with approximately 9.60 grams of gold. Great for layering or wearing on it's own. Excellent condition.
Category

21st Century and Contemporary Chain Necklaces

Materials

Yellow Gold

Van Cleef Arpels Estate Diamond Bow Ring in 18 Karat Yellow Gold
By Van Cleef Arpels
Located in Los Angeles, CA
Gorgeous estate diamond ring from designer Van Cleef & Arpels. This ring is made with 0.18 cts of good quality, white, and bright diamond rounds in a bow design. Size 5. Excellent...
Category

21st Century and Contemporary More Rings

Materials

Diamond, Yellow Gold

Estate Peridot Pear Shape and White Diamond Cocktail Ring in Platinum
Located in Los Angeles, CA
Beautiful bright green peridot pear shape weighing 7.66 cts with 0.88 cts of white diamond rounds in a platinum handmade mounting Ring size is 5.75. Excellent condition.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Peridot, Platinum

Jabel White Diamond Bracelet in 18 Karat White Gold
By Jabel
Located in Los Angeles, CA
Amazing estate Jabel white diamond bracelet with 6.00 cts of good quality, white and bright diamonds. Handcrafted carefully in 18k white gold. Length is 7". Excellent condition.
Category

21st Century and Contemporary More Bracelets

Materials

White Diamond, White Gold

H. Stern Crystal Emerald Cut octagon and White Diamond Round Ring in 18 Karat
By H. Stern
Located in Los Angeles, CA
Stunning estate H. Stern crystal emerald cut octagon and white diamond ring in 18k rose gold. This ring has 0.15 ct of white diamond rounds. Size 8.5.
Category

21st Century and Contemporary More Rings

Materials

Crystal, White Diamond, Emerald

Estate White Diamond Marquise and Round Necklace in 18 Karat White Gold
Located in Los Angeles, CA
Stunning estate diamond necklace. Handmade mounting in 18k white gold. Showcases 13 carats of good quality, white, and bright diamonds. Length is 16".
Category

21st Century and Contemporary More Necklaces

Materials

White Diamond, White Gold

Estate Neiman Marcus Necklace, Earrings, Bracelet, and Ring Set in 18 Karat
By Neiman Marcus
Located in Los Angeles, CA
Marvelous estate Neiman Marcus set! Matching necklace, earrings, bracelet and ring all set in 18k yellow gold. Handcrafted with 162 stones that weigh 29 cts. Beautiful quality blue...
Category

21st Century and Contemporary More Jewelry

Materials

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

H. Stern White Diamond and Black Diamond Dangle Earrings in 18kyg with GIA
By H. Stern
Located in Los Angeles, CA
Stunning estate H. Stern earrings featuring 3.32 ct of E color diamond stones in a novelty cut with 5.75 cts of black diamond rounds. Large white stones are 1.50 ct E VS2 and 1.81 ct...
Category

21st Century and Contemporary Dangle Earrings

Materials

White Diamond, Black Diamond

H. Stern White Diamond and Black Diamond Ring in 18 Karat Yellow Gold with GIA
By H. Stern
Located in Los Angeles, CA
Stunning estate H. Stern ring featuring 3 white diamonds with total weight of 2.06 cts - 0.61 ct E VS1, 0.66 F I1, and 0.79 ct D VS1 . Also 2.75 cts of black diamond rounds. GIA Lab...
Category

21st Century and Contemporary More Rings

Materials

White Diamond, Black Diamond, 18k Gold

Sri Lankan Purplish Pink Sapphire Cushion and White Diamond Pendant Necklace
Located in Los Angeles, CA
Stunning 8.70 ct Sri Lankan purplish pink sapphire cushion with a gorgeous color and life. Excellent quality, white, and bright diamond rounds weighing 1.08 cts. Handcrafted platin...
Category

21st Century and Contemporary Pendant Necklaces

Materials

White Diamond, Pink Sapphire

White Diamond Round and Briolette Diamond by the Yard Necklace in 18 Karat Gold
Located in Los Angeles, CA
Amazing 52 inch diamond by the yard necklace featuring 30.80 cts of diamond briolettes and round faceted stones. White, bright, and clean goods in a handmade 18k white gold necklace....
Category

21st Century and Contemporary Multi-Strand Necklaces

Materials

White Diamond, White Gold

Mikimoto Pearl and White Diamond Necklace in 18 Karat White Gold
By Mikimoto
Located in Los Angeles, CA
There are 49 pearls in this amazing Mikimoto estate pearl necklace. Pearl have beautiful luster and have slight graduation in size. 0.04 cts of good quality white diamond rounds with...
Category

21st Century and Contemporary More Necklaces

Materials

White Diamond, Pearl, White Gold

AGL Colombian Emerald Rectangular Emerald Cut and White Diamond Cocktail Ring
Located in Los Angeles, CA
Spectacular deep green with bright crystal Colombian emerald rectangular emerald cut weighing 3.69 ct. with 2.00 ct. of good quality white and bright diamond baguettes and emerald cu...
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Emerald, Platinum

Emerald Pear and White Diamond Baguette Ring in Platinum
Located in Los Angeles, CA
Beautiful bright green emerald pear shape weighing 1.03 ct. with 0.61 ct. of good quality, white, and bright diamond baguettes in a handmade platinum mounting. Ring size is 5.75. E...
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Emerald, Platinum

Opal Oval and White Diamond Cocktail Ring in 18 Karat Yellow Gold
Located in Los Angeles, CA
Beautiful opal oval weighing 7.13 ct. and 0.93 ct. of good quality, white, and bright diamond rounds in a handmade 18k yellow gold mounting. Ring size is 7.5. Estate piece in excel...
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Opal, Yellow Gold

David Yurman Estate White Diamond and Gold Ring
By David Yurman
Located in Los Angeles, CA
Estate David Yurman ring featuring 1.20 ct. of white diamond rounds and 18k yellow gold. Handmade in size 6.5. Excellent condition.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Gold

White Diamond Rose Cut Bracelet in 18 Karat White Gold
Located in Los Angeles, CA
This bracelet is gorgeous with a lace like design. Showcasing 60 carats of beautiful, clean, white diamond rose cuts (a total of 239 stones) and a handmade 18k white gold mounting. ...
Category

21st Century and Contemporary Modern Bracelets

Materials

White Diamond, White Gold

Estate Carved Green Jade and White Diamond Earrings in Platinum
Located in Los Angeles, CA
Stunning carved green jade parrots with a beautiful deep green color. Good quality, white and bright diamond rounds weighing 0.15 ct. Handmade dangle earrings in platinum. These e...
Category

21st Century and Contemporary Dangle Earrings

Materials

White Diamond, Jade, Platinum

Emerald Cut and White Diamond Three-Stone Ring
Located in Los Angeles, CA
Gorgeous deep and bright green emerald emerald cut weighing 0.87 ct. with good quality white diamond rounds that weigh 0.75 ct. total. Handmade mounting in platinum. Estate piece i...
Category

21st Century and Contemporary Three-Stone Rings

Materials

White Diamond, Emerald, Platinum

Emerald and White Diamond Cocktail Ring in Platinum
Located in Los Angeles, CA
Beautiful bright green emerald emerald cut weighing 0.85 cts with 1.04 cts of white diamond rounds and baguettes in a classic design. Handmade in platinum with approximately 8.60 gr...
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Emerald, Platinum

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Kothari Company Inc For Sale on 1stDibs

Find the exact kothari company inc you’re shopping for in the variety available on 1stDibs. Every item for sale was constructed with extraordinary care, often using gold, white gold and yellow gold. In our selection of items, you can find a vintage example as well as a contemporary version. Finding the perfect kothari company inc 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 kothari company inc has been a part of the legacy of many jewelers, but those produced by H. Stern, Kabana and Bulgari are consistently popular. Take a look at a kothari company inc featuring diamond from our inventory today to add the perfect touch to your look. See these pages for a round cut iteration of this accessory, while there are also oval cut cut and emerald cut cut versions available here, too. Most of our kothari company inc for sale are for men, but there are 2511 pieces available to browse for women.

How Much is a Kothari Company Inc?

On average, a kothari company inc at 1stDibs sells for $8,075, while they’re typically $450 on the low end and $1,000,000 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.