If you found such a stone, you could probably sell it for whatever amount you want.
You can follow the link, below, and find the largest pink diamond currently available for sale commercially.
You may be able to buy a larger pink diamond at an auction. Currently, the largest pink diamond to change hands at an auction is the Graff Pink, weighing 24.78 carats, rated as a Fancy Intense Pink, which sold in 2010 for US$46,000,000. You can learn more about it, below.
A one-half carat diamond weighs 100 milligrams = 0.10 gram.
The diamond either weighs 100 points, or a full carat, or it weighs 80 points or 80/100ths of a carat.
1 Carat = .2 grams = 100 points
A 15/100s carat diamond is on the small side for a single diamond; you may be able to purchase one for US$100 - US$500, depending on its colour and clarity.
All diamonds -- each with its own carat weight -- are 100 percent diamond.
100th Anniversary:Traditional-Ten Carat DiamondTen Carat Diamond
One carat is equivalent to 100 cents in diamonds. Carat is a unit of weight used to measure diamonds and other gemstones, with one carat equal to 200 milligrams. The term "cent" is commonly used in the diamond industry to refer to a hundredth of a carat. Therefore, 1 carat is equal to 100 cents in diamonds.
It depends on whether it is treated or natural. The cost of a treated black diamond ranges from as low as $100 to $200 per carat whereas a natural diamond, which is GIA certified the cost per carat ranges from $2500 to $3000, depending on the quality.
Every -- each and every one -- diamond is valued by its cut, clarity, carat weight and colour. This collection of stones will be worth less than a single diamond weighing one carat.
'Cents' or points usually describe diamond weight that less than one carat. One carat equals 100 cents or 100 points.
As far as gemstones are concerned, carat (karat) is used to measure their weight (as opposed to metals where carat refers to purity). There are 100 points (pts.) to a carat so a 1.0ct diamond is equal to 100 points; a half carat diamond is equal to 50 points and so on.
Paragon