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De Beers Millennium Star, a D-color, internally and externally flawless pear-shape, cut to perfect proportions, weighing a hefty 203.04 carats. It is the second largest faceted D-Flawless diamond in the world, the 273.15 carat Centenary Diamond is the first.

The Pink Star diamond: The flawless 59.60-carat pink diamond is the largest in its class ever graded by the Gemological Institute of America (GIA), with the second biggest less than half its size.

from ELLE UK

A New Ring For Victoria?

100-carat diamond ring

The GRAFF Twin Stars - An exceptionally rare diamond pairing, featuring two 22 carat D Internally Flawless pear shape diamonds (6 diamonds, 53.41cts)

Marquise-cut pink diamond weighing 5.00 carats, within a brilliant and baguette-cut diamond surround, mounted in platinum.

The Centenary Diamond is the third largest diamond to have been extracted from the DeBeers mine in South Africa. Its 273.85 carats is internally and externally flawless with a D color rating. It was displayed in its uncut form at 599 carats for the DeBeers Centenary Anniversary.

from Naturally Colored

All in One - 'The Perfect Blue', 'The Ocean Dream' and 'The Rajah' at Christie's

The Perfect Blue Diamond - a 13.22 carat Flawless Vivid Blue Diamond auctioned by Christie's and estimated at over $21 Million

This almond-shaped stone is the largest apple-green diamond known. Its green color is attributed to the crystal’s close contact with a radioactive source at some point in its lifetime. The Dresden Green, which probably originated in a rough crystal of 100 carats or more, is unique among world-famous gems for not only its color, but also its elongated shape.

Rock Solid Laurence Graff broke the record for a single diamond purchase in 2010 with this 24.78-carat pink diamond for $46 million, now known as the Graff Pink.

Harry Winston Buys World’s Largest Flawless Vivid Blue Diamond For $23.8M and Names it ‘The Winston Blue’... If I ever have the honor of naming an important diamond, I shall call it Fred or George and I shall hug it and kiss it....

The Graff Pink, a 24.78 carat pink diamond, has a rectangular shape with rounded corners and was once owned by Harry Winston.

The Imperial Emerald at 206 carats is the world's most valuable emerald due to the fact that it is so clean, clear and is totally unenhanced.

Acquired as a 225 carat rough diamond from an Angolan mine Laurence Graff knew instinctively that this would be an incredible diamond. After painstaking six month journey, Graff's Master cutters revealed a magnificent Internally Flawless diamond weighing an incredible 102.44 carats. It was then put back on the polishing wheel to create the ultimate accolade within the diamond world: a 100 carat pear shape, D Color, Internally Flawless diamond.

The Steinmetz Pink was discovered in southern Africa and is the largest Fancy Vivid Pink diamond known in the world. It weighs 59.60 carats and has been graded as Internally Flawless.