Diamonds are priced by the 4 Cs: Carat weight, Cut, Color and Clarity. You'll notice that weight is only one factor, making the question essentially meaningless. A diamond with obvious flaws and inclusions will cost much less than one with no visible defects, and a bluish-white stone is likely to be worth a lot more than a yellowish one.
For example, today on Blue Nile, you can buy a .52 carat round diamond, J colour, VS2 clarity with a fair quality cut and spend just over US$500. Or you can spend just over US2,800 for a .51 carat pear cut diamond, D colour that is Internally Flawless with a very good-quality cut.
A one-half carat diamond weighs 100 milligrams = 0.10 gram.
Generally, you would write .50 carat to represent a half-carat stone.
Half carat is the term used to measure the weight of the real diamond. A diamond's weight does not define or detract from the fact that the diamond is or is not a real diamond.
One carat weight of diamond weighs .20 grammes, so your diamond is about half that weight, or roughly half a carat.
To find the price per carat of the diamond, divide the total price by the weight in carats. In this case, ( \frac{2772}{0.77} ) equals approximately 3602.60. Therefore, the price per carat of the diamond is about $3,602.60.
The price of a 1-carat diamond can vary widely depending on several factors, including the diamond's cut, color, clarity, and carat weight.
Your price for any diamond depends on the cut, carat weight, colour and clarity of the diamond that you want to buy.
A half carat diamond of this cut measures 5.2 mm at the girdle; a .65 carat diamond measures 5.6 mm at the girdle. A certified gemologist can give you the exact carat weight of your diamond.
The price of any diamond depends not only on its carat weight, but on its colour, clarity and cut. A local jeweler can show you a diamond of this carat weight and give you a price, depending on its other characteristics.
The value of a diamond depends on its cut, its clarity, its colour and its carat weight.
1 carat is 0.2g, so 1/2 of a carat equates to a 0.1g gemstone.
The price for a one carat diamond cluster will vary greatly depending on things such as the quality and size of the diamonds in the cluster. The type of ring setting is also a factor in price such as 10, 14, 18 or 24 carat gold. An example is a 10k white gold diamond cluster is $600 at Zales but a 14 carat diamond cluster on the Ross Simons site sells for $2,471.