[nybble41]

Colored diamonds are graded and priced using the 4Cs: cut, clarity, carat, and color. Cut, clarity, and carat all follow the pricing rules of colorless diamonds, but the color grading is much different. There are nearly 30 base colors, which can be combined to create over 200 unique color combinations. The specific name of the color is determined by a laboratory grader, who examines the base color and any secondary colors. For example, the color of a green diamond with hints of blue would be called a “bluish green.” A grader will also evaluate the hue, tone, and saturation of the color in the diamond in order to determine its Fancy Color. This grading is determined by the intensity of the color, and from least to most saturated are graded as faint, very light, light, fancy light, fancy, fancy intense, fancy vivid, fancy dark, or fancy deep. The deeper and more intense the color, the more expensive the diamond will be.

[BioMike]

This .75 carat dazzling blue diamond with VS2 clarity can be found at James Allen for $65,820

[thaigamezone]

Find this Ring at Blue Nile This pink lab-grown diamond ring is available at Blue Nile for $600 more

[Vaschel33]

Diamonds are almost hypnotising, aren’t they?

[Judson]

It would be unlikely to receive a coloured diamond from Astteria that isn’t better than their competitors. Their methods of mining, manufacturing and care that go into making and maintaining their diamonds is truly unparalleled across jewellers everywhere.

[kavindave26]

With the blue diamond holding the title of one of the darkest, clearest and highest carat weighted gemstones available, it’s clear to see why Astteria determine it to be the most expensive gemstone in the world. more

[cbrendanjarvisi]

This Mughal-cut stone weighed 191 carats, and it recut to upgrade its sparkle and brilliance to a 105.6-carat shallow oval in 1852 at Garrard of London. This is now the property of the British Crown. No one knows the exact value of Koh-i-Noor, but some rumors say it may cost over 1 billion Euros, which might be pretty true as it is a priceless piece and is definitely one of the most expensive diamonds in the world. more

[tddert]

Cullinan, the largest gem with a diamond weighing 3,106.75 carats, discovered at the premier no.2 mine in Cullinan, South Africa, back on 26 January 1905. This diamond named after the chairman of the mine, Thomas Cullinan; it unsold for two years even though it had an interest. The Cullinan Diamond bought to Britain by the Transvaal Colony government and later presented to Edward VII, king of the United Kingdom or the UK. here

[yrrryyoderj]

In color, it rated as a D grade by the GIA, the highest grade that can given to a colorless diamond, and it internally and externally flawless. This Diamond named the Centenary Diamond because it presented for the Centennial Celebration of De Beers Consolidated Mines on 11 May 1988. The Centenary Diamond unveiled its final form back in May 1991. [links]

[Iskender]

It is weighing 45.52 carats. It is described as being ‘fancy dark greyish blue’ it’s currently priced at 200-250 million US Dollars, making it is the most expensive diamond in the world. The Diamond originated from the Kollur Mine, Telangana in India the stone from the world-famous Golconda Diamonds. here

[kbelanger]

Previously owned by British diamond dealer and racehorse owner Sir Philip Oppenheimer, the Oppenheimer Blue set a world auction record in 2016 when it sold for more than US$57.5 million at Christie’s Geneva Magnificent Jewels sale. The 14.62-carat stone was the largest fancy vivid blue diamond ever offered at auction and was set into a platinum ring between two trapeze-shaped diamonds.

[shaeehickman86]

When Blue Moon sold for US$48.4 million at a 2015 Sotheby’s auction in Geneva, auctioneer David Bennett said it had obtained the “highest price per carat” for any kind of gemstone. CNN later confirmed that Hong Kong billionaire Joseph Lau bought the diamond and renamed it after his 7-year-old daughter, Josephine.

[bijenu]

After 60 years spent in a private collection, the 24.78-carat Graff Pink was sold by Sotheby’s for US$46.2 million in 2010 to Laurence Graff, chairman of Graff Diamonds. Exceptionally rare because of its size, colour and cut, at the time of purchase Graff described his new acquisition as “the finest pink diamond I have ever seen”.

[kenny1029]

Auctioned off by Sotheby's Hong Kong in 2017, the Pink Star was acquired by famed jeweller Chow Tai Fook and renamed CTF Pink Star in a nod to the current chairman and founder’s late father, Dr Cheng Yu-Tung. It went under the hammer after just five minutes of bidding for a staggering US$71 million, setting a new world record for any gemstone at auction. [links]