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Oval Shape Emerald Round Shape Diamond Ring in 18K White Gold
Located in Los Angeles, CA
Beautiful 5.61 ct. emerald oval with good quality white diamond rounds. Handmade in 18k white gold. Ring size 5.75.
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Emerald, White Gold

Purple Spinel Cushion Solitaire Ring in 14K White Gold
Located in Los Angeles, CA
Beautiful 2.64 ct. purple spinel cushion in a handmade 14k white gold mounting. Ring size 5.25.
Category

21st Century and Contemporary Solitaire Rings

Materials

Spinel, White Gold

White Diamond Baguette and Round Bracelet 14K Yellow Gold
Located in Los Angeles, CA
Beautiful bracelet with 6.00 ct. of good quality white diamond baguettes and rounds. Handmade in 14k yellow gold. Length is 7".
Category

21st Century and Contemporary Retro Bracelets

Materials

White Diamond, Yellow Gold

Blue Sapphire Oval and White Diamond Cocktail Ring in Platinum
Located in Los Angeles, CA
Beautiful 1.58 ct. blue sapphire oval with 0.63 ct. good quality, white, and bright diamond baguettes. Handmade in platinum. Ring size 6.5.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Blue Sapphire, Platinum

Mozambique Red Ruby Oval and Diamond Cocktail Ring
Located in Los Angeles, CA
Gorgeous 5.84 carat Mozambique red ruby oval with white diamond rounds and baguettes in size 6.5. This ring is a perfect accessory for any occasion and comes with a GRS Lab Report.
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Ruby

Estate Marianne Ostier AGL Burma Red Ruby and Diamond Pearl Necklace
By Marianne Ostier
Located in Los Angeles, CA
Gorgeous estate Marianne Ostier white pearl necklace with AGL certified unheated Burmese ruby rounds and good quality white diamond rounds. Handmade in platinum with great attention...
Category

20th Century Multi-Strand Necklaces

Materials

Diamond, Pearl, Ruby, Platinum

Pave White Diamond "Love You" Wide Band in 18K White Gold
Located in Los Angeles, CA
Beautiful white diamond round pave wide band that says "Love You". Handmade in 18k white gold. Ring size 5.25.
Category

21st Century and Contemporary Band Rings

Materials

White Diamond, White Gold

Tanzanite and White Diamond Dangle Earrings in 18k Yellow Gold
Located in Los Angeles, CA
Beautiful 2.40 ct. tanzanite emerald cuts with 1.00 ct. good quality white diamond rounds. Handmade in 18k yellow gold. Matching pendant necklace available also.
Category

21st Century and Contemporary Dangle Earrings

Materials

White Diamond, Tanzanite, Yellow Gold

Heart Shape Carved Emerald Pendant Necklace in 18K Yellow Gold
Located in Los Angeles, CA
Beautiful 9.59 ct. carved emerald heart shape in a handmade 18k yellow gold mounting and chain. Length is 18.5". Made in Italy.
Category

21st Century and Contemporary Italian Pendant Necklaces

Materials

Emerald, Yellow Gold

White Diamond Brooch in 18K Yellow Gold Platinum
Located in Los Angeles, CA
Beautiful 12.00 ct. good quality, white, and bright diamond rounds in this handmade 18k yellow gold and platinum brooch.
Category

21st Century and Contemporary Brooches

Materials

White Diamond, Yellow Gold, Platinum

GIA Sri Lanka Blue Sapphire and White Diamond Cocktail Ring in Platinum
Located in Los Angeles, CA
Gorgeous 16.47 ct. good quality bright blue sapphire oval from Sri Lanka with 1.34 ct. good quality white diamond rounds. Handmade in platinum. Ring size 6.5. GIA certificate incl...
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Blue Sapphire, Platinum

GIA Orange Sapphire Cushion and White Diamond Cocktail Ring in Platinum
Located in Los Angeles, CA
Stunning bright orange 10.29 ct. sapphire cushion with good quality white diamond rounds. Handmade in platinum. Ring size 6.75. GIA certificate included.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Sapphire, Platinum

GIA Unheated Orangy Yellow Sapphire Pear and White Diamond Cocktail Ring
Located in Los Angeles, CA
Gorgeous unheated 6.20 ct. orangy yellow pear shape sapphire with 0.72 ct. good quality white diamond rounds. Handmade in 18k yellow gold and platinum. Ring size 6.75+. GIA certif...
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Yellow Sapphire, 18k Gold, Platinum

GIA White Diamond Oval Tennis Bracelet in Platinum
Located in Los Angeles, CA
Absolutely stunning 31.18 ct. EFG SI1-SI2 white diamond ovals bracelet. Each stone is about 1 carat with a total of 31 stones. Handmade in platinum. Length is 7". GIA certificate...
Category

21st Century and Contemporary Tennis Bracelets

Materials

White Diamond, Platinum

GIA Blue Sapphire Cushion and White Diamond Cocktail Ring in 18k White Gold
Located in Los Angeles, CA
Gorgeous 4.14 ct. blue sapphire cushion with 1.30 ct. good quality white diamond rounds. This sapphire has a nice bright yet deep blue color. Handmade in 18k white gold. Ring size...
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Blue Sapphire, White Gold

GIA Yellow and White Diamond Ring in 18k
Located in Los Angeles, CA
Beautiful 2.50 ct. Y to Z color VS2 clarity diamond princess cut with good quality white diamond rounds and natural yellow diamond rounds. Handmade in 18k yellow and white gold. Ri...
Category

21st Century and Contemporary Engagement Rings

Materials

White Diamond, 18k Gold

Tsavorite Garnet and White Diamond Cocktail Ring in 18k White Gold
Located in Los Angeles, CA
Beautiful bright 4.01 ct. tsavorite garnet emerald cut with 1.23 ct. good quality white diamond rounds. Handmade in 18k white gold. Ring size 6.5.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Garnet, Tsavorite, White Gold

Aquamarine Cabochon and White Diamond Cocktail Ring in 18k White Gold
Located in Los Angeles, CA
Gorgeous 42.40 ct. aquamarine cabochon with 1.00 ct. good quality white diamond rounds. Handmade in 18k white gold. Ring size 4.75.
Category

21st Century and Contemporary Cocktail Rings

Materials

Aquamarine, White Diamond, White Gold

GIA Unheated Color Change Sapphire and White Diamond Ring in 18k Yellow Gold
Located in Los Angeles, CA
Gorgeous 4.62 ct. unheated color change sapphire cushion with 0.77 ct. good quality white diamond baguettes. Handmade in 18k yellow gold. Ring size 7. GIA certificate included.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Sapphire, Yellow Gold

Mandarin Garnet Pear and White Diamond Round Diamond Ring in Platinum
Located in Los Angeles, CA
Beautiful 6.06 ct. Mandarin garnet pear shape with good quality white diamond rounds. Handmade in platinum. Ring size 6.
Category

21st Century and Contemporary Solitaire Rings

Materials

White Diamond, Garnet, Mandarin Garnet, Platinum

Carved Emerald Fancy Shape and White Diamond Round Ring in Platinum
Located in Los Angeles, CA
Beautiful 5.69 ct. carved emerald fancy shape stone with 0.95 ct. good quality white diamond rounds. Handmade in platinum. Ring size 6.75.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Emerald, Platinum

GIA White Diamond Rectangular Cut Ring in 14k White Gold
Located in Los Angeles, CA
Beautiful 1.57 ct. D VVS2 white diamond rectangular cut with smaller white diamond rounds as accents. Handmade in 14k white gold. Ring size is 4. GIA certificate included.
Category

21st Century and Contemporary Engagement Rings

Materials

White Diamond, White Gold

Emerald Pear and Natural Pink Diamond Cocktail Ring in 18K Rose Gold
Located in Los Angeles, CA
Beautiful 4.25 ct. emerald pear shape with 0.50 ct. natural pink diamond rounds. Handmade in 18k rose gold. Ring size 6.5.
Category

21st Century and Contemporary Cocktail Rings

Materials

Pink Diamond, Emerald, Rose Gold

Emerald Pear Shape and White Diamond Cocktail Ring in 18K Yellow Gold
Located in Los Angeles, CA
Beautiful 1.38 ct. emerald pear shape with good quality white diamond baguettes. Handmade in 18k yellow gold. Ring size 5.
Category

21st Century and Contemporary Cluster Rings

Materials

White Diamond, Emerald, Yellow Gold

GIA Yellow Orange Pear Shape Sapphire and Diamond Cocktail Ring in 18k
Located in Los Angeles, CA
Absolutely stunning 6.65 ct. GIA certified yellow orange sapphire pear shape with 4.00 ct. good quality white diamond baguettes. Handmade in 18k yellow gold. Ring size 6.25. GIA c...
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Sapphire, 18k Gold

Black Opal Oval and White Diamond Cocktail Ring in Platinum
Located in Los Angeles, CA
Beautiful 2.55 ct. black opal oval with 0.64 ct. good quality white diamond squares. Handmade in platinum. Ring size 5.5.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Opal, Black Opal, Platinum

GIA White Diamond Heart Shape Eternity Band Ring in 18K White Gold
Located in Los Angeles, CA
Gorgeous 12.02 ct. white diamond heart shapes in a handmade 18k white gold mounting. Color of stones is G- I and clarity is SI1-SI2. Ring size 7.5. GIA certificates are included. ...
Category

21st Century and Contemporary Band Rings

Materials

White Diamond, White Gold

White Diamond Round Tennis Bracelet in 14K White Gold
Located in Los Angeles, CA
Beautiful 4.64 ct. white diamond rounds. Total of 57 stones. Handmade in 14k white gold. Length is 7.25".
Category

21st Century and Contemporary Tennis Bracelets

Materials

White Diamond, White Gold

Turquoise Oval Cabochon and White Diamond Ring in Platinum
Located in Los Angeles, CA
Beautiful turquoise oval cabochon with good quality white diamond rounds. Handmade in platinum. Ring size 5.75.
Category

21st Century and Contemporary Fashion Rings

Materials

White Diamond, Turquoise, Platinum

White Diamond Round Tennis Necklace in Yellow Gold
Located in Los Angeles, CA
Gorgeous tennis necklace with 8.08 ct. of good quality, white, and bright diamond rounds. Handmade in 14k yellow gold. Length is 14".
Category

21st Century and Contemporary Chain Necklaces

Materials

White Diamond, Yellow Gold

Estate H. Stern Crystal and White Diamond Bracelet and Earring Set in 18K
By H. Stern
Located in Los Angeles, CA
Gorgeous estate H. Stern bracelet and dangle earring set featuring crystal cabochons and good quality diamond rounds. Handmade in 18k yellow gold.
Category

21st Century and Contemporary Link Bracelets

Materials

Crystal, Diamond, 18k Gold

White Diamond Round Tennis Necklace in 14K White Gold
Located in Los Angeles, CA
Beautiful 6.75 ct. good quality, white, and bright diamond rounds. Handmade in 14k white gold. Length is 15".
Category

21st Century and Contemporary Chain Necklaces

Materials

White Diamond, White Gold

White Diamond Round Tennis Necklace in 14K White Gold
Located in Los Angeles, CA
Beautiful 7.07 ct. good quality, white, and bright diamond rounds. Handmade in 14k white gold. Length is 15". Perfect for stacking or wearing on it's own!
Category

21st Century and Contemporary Chain Necklaces

Materials

White Diamond, White Gold

GIA White Diamond Round Tennis Bracelet in 18K White Gold
Located in Los Angeles, CA
Stunning 36.06 ct. KL color SI1-SI2 clarity white diamond rounds. Total of 24 stones. Handmade in 18k white gold. Length is 7". All stones are GIA certified and all certificates ...
Category

21st Century and Contemporary Tennis Bracelets

Materials

White Diamond, White Gold

Blue Sapphire Oval Cabochon Solitaire Ring in Platinum
Located in Los Angeles, CA
Beautiful 6.37 ct. blue sapphire oval cabochon. Handmade in platinum. Ring size 5.25.
Category

21st Century and Contemporary Solitaire Rings

Materials

Blue Sapphire, Platinum

GIA White Diamond Marquise Cluster Earrings in 18K White Gold
Located in Los Angeles, CA
Gorgeous cluster earrings with 7.30 ct. HIJ color SI1-SI2 white diamond marquise shapes. Handmade in 18k white gold. Lever back with post for pierced ears. GIA certificates included.
Category

21st Century and Contemporary Lever-Back Earrings

Materials

White Diamond, White Gold

White Diamond Round Tennis Bracelet in 18K White Gold
Located in Los Angeles, CA
Beautiful and simple tennis bracelet with 59 good quality white diamond rounds. Handmade in 18k white gold. Length is 7".
Category

21st Century and Contemporary Tennis Bracelets

Materials

White Diamond, White Gold

White Diamond Cross Pendant Necklace in 18K Yellow Gold
Located in Los Angeles, CA
Beautiful 2.12 ct. white diamond rounds in this handmade 18k yellow gold pendant necklace. Length of chain is 18".
Category

21st Century and Contemporary Pendant Necklaces

Materials

White Diamond, Yellow Gold

White Diamond Double Row Hoop Earrings in 18K Yellow Gold
Located in Los Angeles, CA
Beautiful double row diamond earrings with 0.73 ct. white and bright diamond rounds. Handmade in 18k yellow gold. A fun yet classy piece to add to any jewelry collection.
Category

21st Century and Contemporary Hoop Earrings

Materials

White Diamond, Yellow Gold

White Diamond Pendant Necklace in 14K White Gold
Located in Los Angeles, CA
Beautiful 0.54 ct. good quality, white, and bright diamond rounds. Handmade in 14k white gold that has a satin finish. Length is 18".
Category

21st Century and Contemporary Pendant Necklaces

Materials

White Diamond, White Gold

White Diamond Oval Hoop Earrings in 18 Karat White Gold
Located in Los Angeles, CA
Beautiful 3.18 ct. white diamond ovals (total of 36 stones) handmade in 18k white gold. These earrings are a classic piece that should be in everyone's jewelry collection!
Category

21st Century and Contemporary Hoop Earrings

Materials

White Diamond, White Gold

GIA Yellowish Orange Sapphire and White Diamond Cocktail Ring in 18k Yellow Gold
Located in Los Angeles, CA
Gorgeous 13.11 ct. yellowish orange sapphire octagon with 0.75 ct. good quality white and clean diamond rounds. Handmade in 18k yellow gold. Ring size 6.5. GIA certificate included.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Sapphire, Yellow Gold

Yellow Diamond Heart Shape Eternity Band Ring in 18K Yellow Gold
Located in Los Angeles, CA
Gorgeous 7.36 ct. yellow diamond heart shapes (total of 14 stones) handmade in 18k yellow gold. Ring size 6.5.
Category

21st Century and Contemporary Band Rings

Materials

Yellow Diamond, Yellow Gold

GIA Trillion Cut Diamond Snake Ring in 18K Yellow Gold Black Rhodium
Located in Los Angeles, CA
Stunning 1.34 ct. K SI2 trillion with 1.10 ct. white diamond rounds. Handmade in 18k yellow gold and black rhodium. Ring size is 5.5 - 6. GIA certificate included.
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Yellow Gold, Rhodium

Turquoise Cabochon and White Diamond Three Stone Ring in Platinum
Located in Los Angeles, CA
Beautiful turquoise round cabochon and white diamond three stone ring. Handmade in platinum. Ring size 5.75.
Category

21st Century and Contemporary Three-Stone Rings

Materials

White Diamond, Turquoise, Platinum

Benitoite and White Diamond Snake Ring in 18k
Located in Los Angeles, CA
Beautiful 0.87 ct. benitoite in a fancy shape with good quality white diamond rounds. Snake design. Ring size 6.75. Handmade in 18k white gold. This stone is native to Callifornia.
Category

21st Century and Contemporary Fashion Rings

Materials

White Diamond, 18k Gold

GIA White Diamond Round Tennis Bracelet in Platinum
Located in Los Angeles, CA
Gorgeous 26.04 ct. white diamond round tennis bracelet with 26 diamonds that are I-J color and SI1-SI2 clarity. Handmade in platinum. Length is 7". GIA certificates included.
Category

21st Century and Contemporary Tennis Bracelets

Materials

White Diamond, Platinum

GIA Sri Lanka Yellow Orange Sapphire and White Diamond Ring in 18K Yellow Gold
Located in Los Angeles, CA
GIA 19.62 ct. Sri Lankan yellowish orange sapphire heart shape with blue sapphires, pink sapphires, and white diamonds. Handmade in 18k yellow gold. Ring size 7. GIA certificate i...
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Sapphire, Yellow Gold

Emerald Cushion Three Stone Ring in 18K Yellow Gold
Located in Los Angeles, CA
Beautiful 31.17 ct. emerald cushions. Handmade in 18k yellow gold. This three stone ring is simple and classy. Ring size 6.5.
Category

21st Century and Contemporary Three-Stone Rings

Materials

Emerald, Yellow Gold

IGI White Diamond Radiant Engagement Ring in 14K Rose Gold
Located in Los Angeles, CA
Beautiful 0.96 ct. I color SI1 clarity IGI certified white diamond radiant with 0.35 ct. white diamond rounds. Handmade in 14k rose gold. Ring size 7. IGI certificate included.
Category

21st Century and Contemporary Bridal Rings

Materials

White Diamond, Rose Gold

White Diamond Round Pave Detachable Clip On Earrings in 18K Yellow Gold
Located in Los Angeles, CA
Beautiful clip on earrings with 2.00 ct. good quality white diamond rounds. Handmade in 18k yellow gold. These earrings can be worn with the gold bezel or without giving you two pa...
Category

21st Century and Contemporary Clip-on Earrings

Materials

White Diamond, Yellow Gold

Brown Quartz Emerald Cut and White Diamond Cocktail Ring in 18K White Gold
Located in Los Angeles, CA
Beautiful 25.00 ct. brown quartz emerald cut with 1.27 ct. white diamond round pave. Handmade in 18k white gold. Ring size 7.
Category

21st Century and Contemporary Cocktail Rings

Materials

White Diamond, Quartz, White Gold

Carved Rose Quartz and White Diamond Ring in 14K Rose Gold
Located in Los Angeles, CA
Beautiful carved rose quartz and 0.10 ct. white diamond rounds. Handmade in 14k yellow gold. Ring size 10.25.
Category

21st Century and Contemporary Fashion Rings

Materials

White Diamond, Quartz, Rose Gold

Tanzanite and White Diamond Pendant Necklace in 14K Yellow Gold
Located in Los Angeles, CA
Beautiful 15.45 ct. tanzanite oval with 0.05 ct. white diamond rounds. Handmade in 14k yellow gold. Length is 18".
Category

21st Century and Contemporary Pendant Necklaces

Materials

White Diamond, Tanzanite, Yellow Gold

Natural Pink and White Diamond Ring in 18K White Gold
Located in Los Angeles, CA
Gorgeous 1.62 ct. natural pink and white diamond rounds. Handmade in 18k white gold. Ring size 6.75.
Category

21st Century and Contemporary Cluster Rings

Materials

White Diamond, White Gold

White Diamond Round Design Necklace in 18K 2 Tone Gold
Located in Los Angeles, CA
Beautiful 1.25 ct. good quality white diamond rounds in this handmade 18k white and yellow gold necklace. Length is 14".
Category

21st Century and Contemporary Chain Necklaces

Materials

White Diamond, 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

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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.