Given that 1 carat equal to 0.2 grams, if we were to calculate the weight of a 0.8 carats diamond, the weight in grams would be = 0.8 carats * 0.2 grams/carat weight in grams = 0.16 grams.
The larger the carat weight of a diamond, the higher its price per carat -- the bigger the diamond, the rarer it becomes, which adds to its price. Two engagement rings, each having a diamond weighing one carat, may cost $5,000, whereas one with a 2-carat diamond may cost $20,000. A bigger diamond can be considerably more expensive than a smaller one. For example, a Round SI1 F Very Good Cut 1ct will cost $4,800, while a similar 2ct will cost $15,000 (the per carat weight of the latter becomes $7,500). At the same time, many other factors determine the price of a diamond, including color, clarity, and cut.
The carat weight of a diamond can be determined by measuring—table up—the diamond in millimeters across the widest and narrowest points, apart from the depth or height. Once these measurements are taken, they can be put into any online diamond carat weight calculator. Afterward, you will be required to specify the shape of your diamond, following which you will be able to see its exact weight in carats.
Since every carat is divided into one hundred points, you will find diamonds in different ranges, e.g., 1.25 or 0.25 carats. Imagine a dollar in your mind – 1.25 carats would be like one dollar plus a quarter, or 0.25 carats would be like a quarter of a dollar.