The Amsterdam Diamond achieves a price per carat of US$ 10,220, the highest price per carat achieved by a black diamond at an auction. Christie’s placed a pre-sale estimate of $302,000 to $391,000 on the Amsterdam diamond, at its Magnificent Jewels Sale 1290, held in Geneva, on November 14, 2001.
What’s the most expensive black diamond?
The Gruosi Diamond
Having one of the best and most expensive black diamond collections, Fawaz Gruosi bought another black stone in 1998 from India. this one weighing 300.12-carat in its rough. After 3 years of cutting the 300.12 carat rough diamond emerged as the 115.34-carat Gruosi Diamond.
What is the largest black diamond?
At 312.24 carats the Spirit of de Grisogono is the world’s largest black diamond, and world’s 5th largest diamond. A formidable ring in a unique, mesmerising white gold mounting, it is set with 702 white diamonds weighing a total of 36.69 carats.
How expensive is black diamond?
How much do black diamonds cost? The average cost of a black diamond depends on whether it is a heat treated natural diamond or an untreated natural diamond. Treated black diamonds have an average cost of $300 per carat, while untreated black diamonds have an average cost of $3,000 per carat.
What is the rarest diamond?
Quick answer: The rarest diamond color is the red diamond. They are so rare that less than 30 true red diamonds are known to exist. They can cost $1 million per carat and most of the red diamonds in existence are less than ½ a carat in size.
Are black diamonds cheaper?
Are Black Diamonds More Expensive Than White? Although black diamonds are rarer than white, colorless diamonds, they generally cost less to purchase. The main reason for this is lower demand.
How much is the Cullinan Diamond?
The Cullinan Diamond – Worth $400 Million
At 621.35 grams, the rough-cut Cullinan is the largest gem quality diamond ever discovered in the world. It’s was so large that even after being cut into the famous 530 carat Star of Africa diamond, there was enough left over for several more valuable stones.
Who owns the biggest diamond in the world?
Unearthed in a South Africa mine in 1905 and weighing 3,106 carats, the Cullinan—named after Thomas Cullinan, the chairman of the mining company—still holds the title of largest diamond ever found (if you’re keeping score, the second largest, the 1,758-carat Sewelo, was discovered in Botswana in 2019 and now belongs to …
How big is the Cullinan Diamond?
In its uncut state, it weighed 3,106 metric carats and boasted a size of 10.1 x 6.35 x 5.9 cm. This scale, coupled with its extraordinary blue-white colour and exceptional clarity, made it the most celebrated diamond in the world. In 1907 the Cullinan was presented to King Edward VII by the Government of the Transvaal.
What is a black diamond watermelon?
Black Diamond is a classic oblong watermelon with a black-green rind covering bright red, crisp, flavorful flesh. In the 1950s, Black Diamond was a very popular home garden variety. Fruits have gray-black seeds (perfect for seed spitting contests) and can grow quite large.
Is a Blue diamond rare?
For every 10,000 gem-quality diamonds found, only one possesses brilliant and coveted color. Captivating and enigmatic, blue diamonds are considered the rarest of them all.
Are pink diamonds real?
They Are Extremely Rare
You might think that pink is quite a common color for precious stones, particularly for diamonds, but it isn’t. There is a lot of women that have white diamonds on their rings while pink diamonds are still a rarity.
What is a black diamond called?
Carbonado, commonly known as black diamond, is one of the toughest forms of natural diamond. It is an impure, high-density, micro-porous form of polycrystalline diamond consisting of diamond, graphite, and amorphous carbon, with minor crystalline precipitates filling pores and occasional reduced metal inclusions.
Is there a red diamond?
Red diamonds are so rare that a shockingly low number of pure red diamonds actually are known to exist. Currently, only 20-30 pure red diamonds have been found, and most of those diamonds are less than half a carat in size. The expense of a red diamond is not just prestige.
Why black diamonds are cheaper than white?
Black diamonds are usually cheaper than white ones. This is partly because many of the black diamonds on the market are actually created in a lab. Natural black diamonds are relatively rare.