Depends on the quality of the diamond in question.
Small -- less than one carat, poorly cut stones with visible inclusions, are not very valuable
A natural diamond will always be more valuable than a lab-created diamond, given the same clarity, colour, carat weight and cut of the two comparables.
The value of a diamond depends on its cut, its clarity, its colour and its carat weight. A local jeweler can give you the answer you want.
Yes. Each diamond is valued according to its carat weight, cut, clarity and colour.
Every diamond is valued by its cut, colour, clarity and carat weight. Of equal carat weight and clarity, a coloured diamond graded as a Fancy Colour will probably cost you more than the diamond simply graded as a jewelery grade D-F colour.
The carat defines the standard unit of weight measurement of a diamond.
Carat is the measurement of a diamond's weight. The stone's value would partially depend on its carat weight.
A one carat diamond weighs one carat and contains one carat.
Gem-stone quality diamonds are considered especially valuable due to their rarity and their uniqueness. A diamond's value is determined by its 4 Cs, which include a diamond's cut, clarity, color and carat weight. A diamond low on some or all of the 4 Cs will naturally be less valuable than a diamond that is high in clarity, color, cut and carat weight. Seventy-five to eighty percent or more of all mined diamonds, however, are used by industry to enhance cutting and precision tools.
A two-carat diamond is a gemstone that weighs two carats.
A 625 carat diamond would be a very large diamond, weighing 625 carats.
Any diamond is valued by its cut, clarity, color and carat weight. A large stone such as this would be very valuable, given its size alone, which is uncommon and rare. But a fixed price can't be calculated without the other details.