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30 Carat Black Diamond

Diamond Scene Baroque Pearl Black Diamond Gold Long Chain Necklace
Diamond Scene Baroque Pearl Black Diamond Gold Long Chain Necklace

Diamond Scene Baroque Pearl Black Diamond Gold Long Chain Necklace

By Diamond Scene

Located in New York, NY

A fabulous statement necklace! Over 30 carats of black diamond beads and baroque pearl set in 18k white gold. 50 inch length.

Category

21st Century and Contemporary Chain Necklaces

Materials

Diamond, Black Diamond, Pearl, 18k Gold

.30 Carat Natural Diamonds Black Blister Pearl Clip Earrings 14 Karat*
.30 Carat Natural Diamonds Black Blister Pearl Clip Earrings 14 Karat*

.30 Carat Natural Diamonds Black Blister Pearl Clip Earrings 14 Karat*

Located in New York, NY

Black Blister pearl earrings. 21 x 15mm .30ct round diamonds, G-color vs-2 14kt. yellow gold 5.7 grams. Measurement: 1 x .50 inch.

Category

2010s American Clip-on Earrings

Materials

Diamond, Pearl, 14k Gold, Yellow Gold

30 Carat Oval Ethiopian Black Opal Pendant 18 Karat Yellow Gold
30 Carat Oval Ethiopian Black Opal Pendant 18 Karat Yellow Gold

30 Carat Oval Ethiopian Black Opal Pendant 18 Karat Yellow Gold

Located in New York, NY

Approximately 30 Carat Oval Ethiopian Black Opal Pendant 18 Karat This spectacular Pendant Necklace consisting of a single Oval Shape Ethiopian Black Opal Approximately 30 Carat.

Category

2010s Pendant Necklaces

Materials

Diamond, Black Opal, 18k Gold, Yellow Gold

Oscar Heyman Gold 30 Carat One of a Kind Black Opal Snacking Fish Brooch
Oscar Heyman Gold 30 Carat One of a Kind Black Opal Snacking Fish Brooch

Oscar Heyman Gold 30 Carat One of a Kind Black Opal Snacking Fish Brooch

By Oscar Heyman

Located in New York City, NY

Oscar Heyman 18kt yellow gold and platinum brooch contains an extraordinarily fine fancy shape Australian black opal weighing 30.63cts. This unique piece also contains 97 round diam...

Category

2010s American Contemporary Brooches

Materials

Diamond, Opal, Black Opal, Gold, Platinum

Recent Sales

18 carat white gold diamonds ring
18 carat white gold diamonds ring

18 carat white gold diamonds ring

Located in Monte-Carlo, MC

18 carat white gold ring designed with 60 round brillant cut diamonds weighing 0.30 carats and 30 black diamonds weighing 0.30 carats.

Category

2010s Cocktail Rings

Materials

Diamond, White Gold

Chopard Imperiale Diamond Bezel Automatic Chronograph Ladies Watch 38/8549-3006
Chopard Imperiale Diamond Bezel Automatic Chronograph Ladies Watch 38/8549-3006

Chopard Imperiale Diamond Bezel Automatic Chronograph Ladies Watch 38/8549-3006

By Chopard

Located in New York, NY

Chopard Imperiale Ladies Watch Model Number: 38/8549-3006 100% Authentic Brand New Comes with original Chopard box, certificate of authenticity and warranty and instruction manu...

Category

2010s Swiss Wrist Watches

Materials

Stainless Steel

30 Carat Black Diamond Drop White Gold Earrings
30 Carat Black Diamond Drop White Gold Earrings

30 Carat Black Diamond Drop White Gold Earrings

Located in Boca Raton, FL

Fabulous black diamond drop earrings fashioned in white gold. The four black faceted diamonds weigh approximately 30.43 carat total weight. The black diamonds are connected by two ro...

Category

Late 20th Century Unknown Modern Drop Earrings

Materials

White Diamond, Black Diamond, 14k Gold, White Gold

.30 Carat Diamond Black South Sea Pearl White Gold Bracelet
.30 Carat Diamond Black South Sea Pearl White Gold Bracelet

.30 Carat Diamond Black South Sea Pearl White Gold Bracelet

Located in Stamford, CT

South sea pearl and diamond bracelet. 14 beautiful gray black South Sea 10mm Pearls have an exceptional rich a gray color. Separated by 14k white gold round spaces with 116 round cut...

Category

21st Century and Contemporary More Bracelets

Materials

Diamond, Pearl, South Sea Pearl, Black Pearl, Gold, 14k Gold, White Gold

Sterling .80 Carat Black and White Diamond Engagement Ring Size 8
Sterling .80 Carat Black and White Diamond Engagement Ring Size 8

Sterling .80 Carat Black and White Diamond Engagement Ring Size 8

Located in Webster, SD

This beautiful engagement ring is sterling silver. It features a .50 carat, round cut black diamond focal and an estimated .30 carats in black and white diamond accents.

Category

21st Century and Contemporary Unknown Modern Fashion Rings

Materials

Black Diamond, Sterling Silver

Spectacular Black Opal and Diamond Brooch
Spectacular Black Opal and Diamond Brooch

Spectacular Black Opal and Diamond Brooch

Located in Houston, TX

30 carat Black opal and 12 carat Diamond Brooch custom made for Neiman Marcus

Category

21st Century and Contemporary Brooches

Materials

Diamond, Opal, Platinum

Margot McKinney 18 Karat Gold Earrings with White/Black Diamonds, Pearl Drops
Margot McKinney 18 Karat Gold Earrings with White/Black Diamonds, Pearl Drops

Margot McKinney 18 Karat Gold Earrings with White/Black Diamonds, Pearl Drops

By Margot McKinney

Located in Brisbane AU , Queensland

Margot McKinney Pair of 18 karat White Gold Earrings elegantly set with White and Black Diamond tops consisting of a total of 76 White Diamonds 1.26 carat, 30 (treated) Black Diamond...

Category

21st Century and Contemporary Australian Drop Earrings

Materials

White Diamond, Black Diamond, Pearl, South Sea Pearl, Diamond, 18k Gold,...

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Audemars Piguet Royal Oak 15407OR.OO.1220OR.01 Double Balance Wheel Iced Out
Audemars Piguet Royal Oak 15407OR.OO.1220OR.01 Double Balance Wheel Iced Out

Audemars Piguet Royal Oak 15407OR.OO.1220OR.01 Double Balance Wheel Iced Out

By Audemars Piguet

Located in New York, NY

Audemars Piguet Royal Oak Double Balance Wheel in 18K Rose Gold 15407OR Openworked Dial is an iconic masterpiece known for its sporty octagonal case shape, substantial link bracelet,...

Category

2010s Swiss Modern Wrist Watches

Materials

Rose Gold

10 Carat Oval Shape Ethiopian Opal Cocktail Ring 14 Karat Yellow Gold
10 Carat Oval Shape Ethiopian Opal Cocktail Ring 14 Karat Yellow Gold

10 Carat Oval Shape Ethiopian Opal Cocktail Ring 14 Karat Yellow Gold

Located in New York, NY

approximately 10 Carat Oval Shape Ethiopian Opal Cocktail Ring 14 Karat Yellow Gold size 5 Oval Natural Opal A classic, Cocktail ring 14 Karat Yellow Gold Estate Size of the opal ...

Category

2010s Cocktail Rings

Materials

Opal, 14k Gold, Yellow Gold

Chanel 1989 Montre Mademoiselle 16 cm Yellow Gold Pearls bracelet Watch M
Chanel 1989 Montre Mademoiselle 16 cm Yellow Gold Pearls bracelet Watch M

Chanel 1989 Montre Mademoiselle 16 cm Yellow Gold Pearls bracelet Watch M

By Chanel

Located in PARIS, FR

Chanel Mademoiselle model watch, square yellow gold case, quartz movement, white background with Roman numeral indexes, crown with a small half pearl, yellow gold and pearl bracelet,...

Category

Vintage 1980s French Wrist Watches

Materials

Pearl, Yellow Gold

Emilio Jewelry Certified 16.00 Carat Burma No Heat Earrings
Emilio Jewelry Certified 16.00 Carat Burma No Heat Earrings

Emilio Jewelry Certified 16.00 Carat Burma No Heat Earrings

By Emilio!

Located in New York, NY

From the museum vault at Emilio Jewelry, a well known and respected wholesaler/dealer located on New York’s iconic Fifth Avenue, Featuring the kings of gems, a Burma Untreated No He...

Category

21st Century and Contemporary Stud Earrings

Materials

Ruby

4 Ct Oval Shape Black Australian Opal & Diamond 14 K Yellow Gold Pearl Necklace
4 Ct Oval Shape Black Australian Opal & Diamond 14 K Yellow Gold Pearl Necklace

4 Ct Oval Shape Black Australian Opal & Diamond 14 K Yellow Gold Pearl Necklace

Located in New York, NY

Introducing our exquisite 14K Yellow Gold Pearl Necklace featuring a captivating 4 Carat Oval Black Australian Opal surrounded by dazzling diamonds. The opal displays a mesmerizing p...

Category

2010s Pendant Necklaces

Materials

Opal, Diamond, Pearl, 14k Gold, Yellow Gold

Grand Sapphire Diamond white gold Necklace
Grand Sapphire Diamond white gold Necklace

Grand Sapphire Diamond white gold Necklace

By Diamond Scene

Located in New York, NY

A beautiful sapphire and diamond necklace. 57.67 carats of fine blue oval sapphires. 24.92 carats of white round and marquise cut diamonds. 18k white gold 16.25 inch neck leng...

Category

21st Century and Contemporary Choker Necklaces

Materials

Diamond, White Diamond, Blue Sapphire

18kt Yellow Gold Australian Opal & Diamond Pendant
18kt Yellow Gold Australian Opal & Diamond Pendant

18kt Yellow Gold Australian Opal & Diamond Pendant

Located in San Francisco, CA

If you're looking for an Australian opal with phenomenal play of color, then look no further. This absolutely stunning piece features a natural wavy Australian boulder opal that disp...

Category

Vintage 1970s Unknown Pendant Necklaces

Materials

Diamond, Opal, 18k Gold, Yellow Gold

Important Diamond Tassel Necklace Set in Platinum
Important Diamond Tassel Necklace Set in Platinum

Important Diamond Tassel Necklace Set in Platinum

Located in New York, NY

A gorgeous and unique necklace with beautiful movement. A large and impressive tassel made up of larger diamonds hanging from a diamond chain. 43 carats of diamonds set in pla...

Category

21st Century and Contemporary Drop Necklaces

Materials

Diamond, Platinum

Victorian Opal and Diamond Crown Tiara Haircomb Necklace, circa 1880s
Victorian Opal and Diamond Crown Tiara Haircomb Necklace, circa 1880s

Victorian Opal and Diamond Crown Tiara Haircomb Necklace, circa 1880s

Located in Idar-Oberstein, DE

Victorian Opal and Diamond Crown Haircomb Necklace, ca. 1880s A very unusual and stunning Victorian crown, set with fiery opal cabochons and old-mine cut diamonds, from the 1880s. T...

Category

Antique 19th Century Unknown Victorian Choker Necklaces

Materials

Diamond, Opal, Gold, Silver

Vintage Sapphire and Diamond Convertible Tiara Necklace
Vintage Sapphire and Diamond Convertible Tiara Necklace

Vintage Sapphire and Diamond Convertible Tiara Necklace

Located in London, GB

A vintage sapphire and diamond convertible tiara necklace. An exceptional vintage sapphire and diamond convertible tiara and necklace set, in platinum, circa 1950. This beautifull...

Category

Vintage 1960s French Retro Drop Necklaces

Materials

Diamond, Sapphire, Platinum

Louis Comfort Tiffany Black Opal and Plique a Jour Brooch
Louis Comfort Tiffany Black Opal and Plique a Jour Brooch

Louis Comfort Tiffany Black Opal and Plique a Jour Brooch

By Louis Comfort Tiffany

Located in Riverdale, NY

Tiffany Arts and Crafts Era Black Opal and Plique a Jour Brooch circa 1910's by Louis Comfort Tiffany with Julia Munson in 18k gold. Large peacock Black Opal round measuring .75" x 5...

Category

Antique Early 1900s American Art Nouveau Brooches

Materials

Opal, 18k Gold

Emilio Jewelry GRS Certified 7.50 Carat Burma No Heat Pigeon Blood Ruby Ring
Emilio Jewelry GRS Certified 7.50 Carat Burma No Heat Pigeon Blood Ruby Ring

Emilio Jewelry GRS Certified 7.50 Carat Burma No Heat Pigeon Blood Ruby Ring

By Emilio!

Located in New York, NY

From Emilio Jewelry, a well known and respected wholesaler/dealer located on New York’s iconic Fifth Avenue, Please inquire for more images, certificates, and details. Zoom meetings...

Category

21st Century and Contemporary Three-Stone Rings

Materials

Ruby

Exceptional 5.09 Carat GRS Certified VIVID RED Unheated Ruby Ring
Exceptional 5.09 Carat GRS Certified VIVID RED Unheated Ruby Ring

Exceptional 5.09 Carat GRS Certified VIVID RED Unheated Ruby Ring

Located in Chicago, IL

Exquisite 5.09 Carat GRS Certified Natural Ruby Ring At the heart of this masterpiece lies a 5.09 carat natural ruby, certified by GRS with no indication of thermal treatment and or...

Category

2010s American Contemporary Solitaire Rings

Materials

Diamond, Ruby, Platinum

77.20 Carat Old European Cut Diamond Riviera Necklace
77.20 Carat Old European Cut Diamond Riviera Necklace

77.20 Carat Old European Cut Diamond Riviera Necklace

Located in New York, NY

Finely crafted in silver over gold with 46 Old European cut Diamonds weighing a total of 77.20 carats; the center Diamond weighing 5.77 carats. 18 3/4 inches long

Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Gold, Silver

Hermès Birkin 30 Crocodile Porosus Lisse Cassis Palladium Hardware
Hermès Birkin 30 Crocodile Porosus Lisse Cassis Palladium Hardware

Hermès Birkin 30 Crocodile Porosus Lisse Cassis Palladium Hardware

By Hermès

Located in Berlin, DE

Hermès Birkin 30 in cassis and shiny crocodile porosus leather with palladium hardware. The bag is unworn and comes as full set including the original receipt and Cites. Stamp Y (2020)

Category

2010s French Top Handle Bags

Emilio Jewelry Gia Certified 69.00 Carat Fancy Diamond Necklace
Emilio Jewelry Gia Certified 69.00 Carat Fancy Diamond Necklace

Emilio Jewelry Gia Certified 69.00 Carat Fancy Diamond Necklace

By Emilio!

Located in New York, NY

From the vault at Emilio Jewelry located on New York's iconic Fifth Avenue, Featuring large diamonds starting at 3.00 Carats and slowly graduating smaller. All of the diamonds are Gi...

Category

21st Century and Contemporary Choker Necklaces

Materials

Diamond, Yellow Diamond

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30 Carat Black Diamond For Sale on 1stDibs

You are likely to find exactly the 30 carat black diamond you’re looking for on 1stDibs, as there is a broad range for sale. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and White Gold — can elevate any look. You can easily find a 11 antique edition and 26 modern creations to choose from as well. You’re likely to find the perfect 30 carat black diamond among the distinctive items we have available, which includes versions made as long ago as the 19th Century as well as those produced as recently as the 21st Century. A 30 carat black diamond from Luigi Ferrara, Gems Paradise and Shlomit Rogel — each of whom created a beautiful version of this treasured accessory — is worth considering. See these pages for a round cut iteration of this accessory, while there are also oval cut cut and bead cut versions available here, too. Finding a 30 carat black diamond for sale for women should be easy, but there are 11 pieces available to browse for unisex as well as men, too.

How Much is a 30 Carat Black Diamond?

On average, a 30 carat black diamond at 1stDibs sells for $3,178, while they’re typically $115 on the low end and $95,480 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.