Cut, clarity, carat, and color.
Diamond value depends on the '4 Cs': cut, color, clarity and carat weight.
It completely depends upon the quality. There is no one value you can assign based upon the size. The "4 Cs" dictate value: Cut, Clarity, Color, Carat. You know one of the 4 Cs (carat) but the value can differ greatly based upon the other 3 Cs. The best way to determine value is to have it appraised.
A diamond is valued by its cut, clarity, carat weight and colour.
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.
Diamonds value depends upon its 4 cs. Clarity, colour, cut and carat. In general a 10 cents diamond would cost around US$100 ( VVS clarity, E colour, and excellent cut)
I suggest you get your ring appraised by a professional jeweler before you attempt to sell it. Professional jewelers evaluate jewelry on craftsmanship and market value. Or you can pay for a gemologists certificate which documents the 4 Cs of the diamond, and quality of the metal setting. This will be a better range of market value than an appraisal, which is best used typically for insurance purposes.
The value of a diamond depends on the quality of a diamond, which is determined by the diamond's attributes or its 4 C's (which include: color, clarity, cut and carat weight). Generally speaking, the higher the quality of the diamond, the higher its value will be.
The Koh-i-noor Diamond is priceless and has no listed value.
The term cut, in the 4 Cs of diamond valuation -- cut, colour, clarity and carat weight -- describes the shape of the finished stone.Following the link, below, you can see examples of a few fancy cuts:HeartRadiantMarquisePearOvalEmeraldIn most diamonds adverts, you'll see the round cut, which is common.According to the link below:"As a value factor, though, cut refers to a diamond's proportions, symmetry, and polish."
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4 - cut, colour, clarity and carat
Depending on the colour and clarity, the setting and the carat of the gold. It can range from $1600USD to $7000USDAnswerA diamond's value is totally dependent on 4 C's - color, cut, clarity and carat value. So it is advisable that you take your diamond to a reputable diamond buyer who is in the business of buying diamonds. These jewelers would evaluate your diamond on the basis of 4 C'sand you would be in a position to get maximum value for it. You should also see if they are trained for evaluating a diamond, have a BBB rating for their business and their reputation.