This is the unit of measure used to specify a diamond’s weight. A carat is a small unit of measurement equal to 200 milligrams. Carat is not a measure of a diamond’s size, but rather a measure of a diamond’s weight. One carat can also be divided in 100 points. A .75 carat diamond is the same as 75 points or 3/4 carat diamond. Because larger diamonds are found less frequently in nature, they are more valuable. Therefore, a 1 carat diamond will cost more than twice a 1/2 carat diamond, assuming other characteristics are similar. The most important thing to remember when it comes to a diamond’s carat weight is that it is not the only factor that determines a diamond’s value. The diagram to the right shows the size of various carat weights of a diamond in relation to each other.

What Is Diamond Brilliance?
Diamonds are beautiful, and their brilliance is one of the properties contributing to that. Diamond brilliance refers to how white light is reflected on a diamond. Brilliance determines the sparkle and brightness of a diamond. It is said that an ideal cut diamond is...