12 Carat Diamond
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Blue Topaz, Topaz, White Diamond, Diamond, White Gold, 14k Gold, Gold
21st Century and Contemporary Contemporary Dangle Earrings
Chalcedony, Diamond, White Diamond, Blue Sapphire, Gold, 18k Gold, White...
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
Antique 1880s Unknown Pendant Necklaces
Diamond, Opal, Yellow Gold
2010s Fashion Rings
White Diamond, Tourmaline, 18k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Dangle Earrings
Diamond, White Diamond, Gold, 18k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
2010s Fashion Rings
White Diamond, Sapphire, 18k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
White Diamond, Tanzanite, Diamond, Aquamarine, White Gold, 10k Gold, Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
1990s Pendant Necklaces
Amethyst, Diamond, 18k Gold, Yellow Gold
21st Century and Contemporary American Tennis Bracelets
Diamond, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Blue Topaz, Topaz, White Diamond, Diamond, White Gold, 14k Gold, Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Blue Topaz, Topaz, White Diamond, Diamond, White Gold, 14k Gold, Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Blue Sapphire, Gold, 18k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Dangle Earrings
Diamond, White Diamond, Gold, 18k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Blue Topaz, Topaz, White Diamond, Diamond, White Gold, 14k Gold, Gold
Vintage 1910s Art Deco Engagement Rings
Diamond, Platinum
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Topaz, Blue Topaz, Gold, 14k Gold, White Gold
21st Century and Contemporary Contemporary Dangle Earrings
Diamond, White Diamond, Gold, 18k Gold, White Gold
21st Century and Contemporary Contemporary Dangle Earrings
Diamond, White Diamond, Gold, 18k Gold, White Gold
Vintage 1920s Unknown Brooches
Aquamarine, Diamond, Gold, Yellow Gold
2010s Fashion Rings
White Diamond, Emerald, 18k Gold, White Gold, Yellow Gold
21st Century and Contemporary Contemporary Dangle Earrings
Diamond, White Diamond, Gold, 18k Gold, White Gold
21st Century and Contemporary Italian Artisan Band Rings
Amber, Diamond, 18k Gold, White Gold
Late 20th Century Cocktail Rings
Diamond, Tourmaline, Paraiba, 18k Gold, White Gold
21st Century and Contemporary Hong Kong Contemporary Clamper Bracelets
Diamond, 18k Gold, Rose Gold, White Gold
2010s Engagement Rings
Diamond, Kunzite, 14k Gold, White Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Blue Sapphire, Gold, 18k Gold, White Gold
21st Century and Contemporary American Artisan Drop Necklaces
Diamond, Peridot, White Diamond, 18k Gold, Yellow Gold, Gold, White Gold
2010s American Romantic Stud Earrings
Diamond, Blue Sapphire, Pink Sapphire, 14k Gold, White Gold
21st Century and Contemporary American Modern Engagement Rings
Diamond, Citrine, 14k Gold, Gold
21st Century and Contemporary American Modern Cocktail Rings
Diamond, Citrine, 14k Gold, Gold
21st Century and Contemporary Contemporary Cocktail Rings
Diamond, White Diamond, Blue Sapphire, Gold, 18k Gold, White Gold
2010s Modern Cocktail Rings
Diamond, Ruby, Gold
2010s Thai Modern Stud Earrings
Diamond, Blue Sapphire, 18k Gold, White Gold
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12 Carat Diamond For Sale on 1stDibs
How Much is a 12 Carat Diamond?
Why Gold Shines in Jewelry Craftsmanship
Gold is the feel-good metal, the serotonin of jewelry. Wear vintage and antique gold necklaces, watches, gold bracelets or gold rings and you feel happy, you feel dressed, you feel, well, yourself.
Gold, especially yellow gold, with its rich patina and ancient pedigree going back thousands of years, is the steady standby, the well-mannered metal of choice. Any discussion of this lustrous metal comes down to a basic truth: Gold is elementary, my dear. Gold jewelry that couples the mystique of the metal with superb design and craftsmanship achieves the status of an enduring classic. Many luxury houses have given us some of our most treasured and lasting examples of gold jewelry over the years.
Since its founding, in 1837, Tiffany Co. has built its reputation on its company jewelry as well as its coterie of boutique designers, which has included Jean Schlumberger, Donald Claflin, Angela Cummings and Elsa Peretti. There are numerous gold Tiffany classics worth citing. Some are accented with gemstones, but all stand out for their design and the workmanship displayed.
For the woman who prefers a minimalist look, the Tiffany Co. twist bangle (thin, slightly ovoid) is stylishly simple. For Cummings devotees, signature pieces feature hard stone inlay, such as her pairs of gold ear clips inlaid with black jade (a play on the classic Chanel black and tan), or bangles whose design recalls ocean waves, with undulating lines of lapis lazuli and mother-of-pearl. And just about any design by the great Jean Schlumberger is by definition a classic.
Even had he eschewed stones and diamonds, Southern-born David Webb would be hailed for the vast arsenal of heavy gold jewelry he designed. Gold, usually hammered or textured in some manner, defines great David Webb jewelry. The self-taught jeweler made very au courant pieces while drawing inspiration from ancient and out-of-the-way sources — East meets West in the commanding gold necklaces made by Webb in the early 1970s. The same could be said for his endlessly varied gold cuffs.
In Europe, many houses have given us gold jewelry that sets the highest standard for excellence, pieces that were highly sought after when they were made and continue to be so.
Numerous designs from Cartier are homages to gold. There are the classic Trinity rings, necklaces and bracelets — trifectas of yellow, white and rose gold. As a testament to the power of love, consider the endurance of the Cartier Love bracelet.
Aldo Cipullo, Cartier’s top in-house designer from the late 1960s into the early ’70s, made history in 1969 with the Love bracelet. Cipullo frequently said that the Love bracelet was born of a sleepless night contemplating a love affair gone wrong and his realization that “the only remnants he possessed of the romance were memories.” He distilled the urge to keep a loved one close into a slim 18-karat gold bangle.
BVLGARI and its coin jewelry, gemme nummarie, hit the jackpot when the line launched in the 1960s. The line has been perennially popular. BVLGARI coin jewelry features ancient Greek and Roman coins embedded in striking gold mounts, usually hung on thick link necklaces of varying lengths. In the 1970s, BVLGARI introduced the Tubogas line, most often made in yellow gold. The Tubogas watches are classics, and then there is the Serpenti, the house's outstanding snake-themed watches and bracelets.
A collection called Monete that incorporated the gold coins is one of several iconic BVLGARI lines that debuted in the 1970s and ’80s, catering to a new generation of empowered women. Just as designers like Halston and Yves Saint Laurent were popularizing fuss-free ready-to-wear fashion for women on the go, BVLGARI offered jewels to be lived in.
Since Van Cleef Arpels opened its Place Vendôme doors in 1906, collection after collection of jewelry classics have enchanted the public. As predominantly expressed in a honeycomb of gold, there is the Ludo watch and accessories, circa the 1920s, and the golden Zip necklace, 1951, whose ingenious transformation of the traditional zipper was originally proposed by the Duchess of Windsor. Van Cleef's Alhambra, with its Moroccan motif, was introduced in 1968 and from the start its popularity pivoted on royalty and celebrity status. It remains one of VCA’s most popular and collected styles.
Mention must be made of Buccellati, whose name is synonymous with gold so finely spun that it suggests tapestry. The house’s many gold bracelets, typically embellished with a few or many diamonds, signified taste and distinction and are always in favor on the secondary market. Other important mid-20th-century houses known for their gold-themed jewelry include Hermès and Ilias Lalaounis.
Find a stunning collection of vintage and antique gold jewelry on 1stDibs.
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 rings, vintage engagement rings or Art Deco engagement rings.
Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.
- How big is a 12 carat diamond?1 Answer1stDibs ExpertFebruary 22, 2021The size of a 12 carat diamond is dependent on diamond cut. A 12 carat round diamond is roughly 15 mm in size.
- What is a 24-carat diamond?1 Answer1stDibs ExpertMarch 22, 2022A 24-carat diamond is a precious diamond gemstone that weighs 24 carats. One carat weighs 200 milligrams, meaning a 24-carat diamond weighs roughly 4.8 grams. That equates to roughly 0.17 ounces. On 1stDibs, shop a variety of diamond jewelry.
- Is there a three-carat diamond?1 Answer1stDibs ExpertApril 5, 2022Yes, there are three-carat diamonds, and you can find them from a number of different jewelers and other retailers. Find an assortment of diamond jewelry from the world’s top sellers on 1stDibs.
- What is a 7 carat diamond worth?1 Answer1stDibs ExpertAugust 17, 2021A 7-carat diamond can cost anywhere between $12,000 and $185,000 depending on the quality of the stone. The fewer imperfections, the more expensive the diamond. Some 7-carat diamonds can cost more than $400,000.
- What is a 9 carat diamond worth?1 Answer1stDibs ExpertSeptember 28, 2021A 9-carat diamond’s worth varies depending on the 4Cs of diamond quality — color, cut, clarity and carat. On average, a 9-carat diamond could cost you between $19,000 to $1,000,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 9-carat diamond jewelry from different periods and styles to choose from.
- What is a 3 carat diamond worth?1 Answer1stDibs ExpertSeptember 28, 2021A 3-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 3-carat diamond could cost you between $7,200 to $51,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 3-carat diamond jewelry today.
- What is 1 carat diamond worth?1 Answer1stDibs ExpertFebruary 22, 2021Depending on the quality, age, and designer, a 1-carat diamond can cost between $1,300 and $16,500.
- How large is a 3-carat diamond?1 Answer1stDibs ExpertFebruary 27, 2024In terms of dimensions, how large a 3-carat diamond is varies. The shape of the diamond will determine its length and width. Weighing 600 milligrams, diamonds that are 3 carats are generally considered to be large stones. On 1stDibs, shop a large collection of diamond jewelry from some of the world's top dealers.
- 1stDibs ExpertNovember 6, 2023There is no hard-and-fast rule for how many carats a diamond necklace should be. On average, solitaire diamond necklaces range from 0.5 to 1 carat, but you can find pieces with larger and smaller stones. Tennis chains that feature continuous diamonds set into links usually have much higher total carat weights. For example, one might feature 60 individual diamonds, each 0.20 carats in size, for a total carat weight of 12.0 carats. Shop a wide range of diamond necklaces on 1stDibs.
- 1stDibs ExpertApril 5, 2022A nine-carat diamond is considered rare and holds a premium price. Because of their rarity and size, nine-carat diamonds are a coveted choice for engagement rings. One of the most famous nine-carat diamond rings belongs to actress Kate Hudson, who has a nine-carat emerald cut diamond complemented with tapered baguettes on a platinum band. Shop a selection of diamond jewelry on 1stDibs.
- 1stDibs ExpertSeptember 28, 2021An 8-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On an average an 8-carat diamond could cost you between $17,500 to $90,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 8-carat diamond jewelry from different periods and styles to choose from.
- What is a 4 carat diamond worth?1 Answer1stDibs ExpertSeptember 28, 2021A 4-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 4-carat diamond could cost you between $8,400 to $71,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 4-carat diamond jewelry.
- What is a 6 carat diamond worth?1 Answer1stDibs ExpertSeptember 28, 2021A 6-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 6-carat diamond could cost you between $15,000 to $80,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 6-carat diamond jewelry.
- What is a 5 carat diamond worth?1 Answer1stDibs ExpertSeptember 28, 2021A 5-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 5-carat diamond could cost you between $9,600 to $67,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 5-carat diamond jewelry.
- 1stDibs ExpertSeptember 28, 2021The minimum value of a 25-carat diamond ranges from $300 to $1,400. The prices change subject to the fluctuation of market factors. The value is defined based on the 4Cs — color, clarity, cut and carat weight. Shop antique, vintage and new diamond jewelry on 1stDibs.
- Is a 1.5-carat diamond too big?1 Answer1stDibs ExpertFebruary 27, 2024Whether a 1.5-carat diamond is too big depends on the type of jewelry in question and your personal preferences. A single stud earring that is 1.5 carats is rather large and would cover the entire earlobe. In terms of rings, a 1.5-carat diamond is larger than average. Find a variety of diamond jewelry on 1stDibs.
- Is a two-carat diamond rare?1 Answer1stDibs ExpertFebruary 13, 2023Yes, a two-carat diamond is generally rarer than a smaller diamond, especially high-quality two-carat diamonds. When larger diamonds are found in nature, they usually have flaws. And prices per carat don’t increase as weight increases. A three-carat gem can be less valuable than a one-carat stone, for example, if all of the other attributes are of lesser quality in the larger diamond. Shop an assortment of diamond jewelry from some of the world’s top jewelers on 1stDibs.
- 1stDibs ExpertNovember 1, 2023Whether two-carat diamond studs are too big is a matter of personal preference. At this size, each earring will be one carat. If you opt for the classic round brilliant cut, the studs will typically measure around 6.5 millimeters in diameter, which is a little more than half the size of a dime. Find a wide range of diamond stud earrings on 1stDibs.
- 1stDibs ExpertNovember 8, 2023Whether 1.3-carat diamond earrings are too small is a matter of personal opinion. A pair of earrings with a total carat weight of 1.3 is considered to be medium-sized. The smallest diamond earrings are around 0.25 carats, while the largest are 1.5 carats or more. Explore a wide range of diamond earrings on 1stDibs.
- 1stDibs ExpertNovember 27, 2023Whether half-carat diamond studs are too small is a matter of personal opinion. A pair of diamond studs with a total carat weight of 0.5 usually consists of two 0.25-carat earrings. Many jewelry makers offer studs as small as 0.13 carats, so many people consider half-carat diamond studs to be medium-sized. On 1stDibs, shop a collection of antique and vintage diamond stud earrings.
- 1stDibs ExpertSeptember 28, 2021A 1-carat pink diamond’s worth depends on the color intensity and carat. High-quality pinks are the most expensive natural diamond color today. The price can vary from $10,000 to $70,000 per carat for an intense pink. On 1stDibs, you will find a variety of pink diamond jewelry from different periods.