If you want to buy a diamond with confidence, know the truth about carat weight. Many potential diamond buyers equate price with carat weight alone. This is a common misconception.
There are a variety of elements involved in a diamond’s value and price. For instance, you can have two diamonds with the same carat weight,but two very different prices.
Diamonds are weighed with extreme precision. Carat weight is expressed in metric carats, as seen in the most common weights like ½-carat, ¾-carat, one-carat, two-carat, etc.
However, diamonds over one-carat weight are expressed in carats and decimals. For example, a one-carat diamond may actually weigh 1.02 carats. And diamonds under one-carat are expressed as decimals referred to as points. A ½-carat diamond is actually 0.50 carat, or fifty points.
“Each carat can be subdivided into 100 points,” states the GIA. “This allows very precise measurements to the hundredth decimal place.”
A 0.97-carat diamond will have no significant difference in visual size when compared to a 1.02-carat diamond. The difference in price, however, is quite noticeable.
Another common misconception is that carat weight is the ultimate judge of size. This is not the case. Cut plays an important role in determining visual size, and only the actual measurements of the stone will tell you how big a diamond looks, so don’t get too caught up on carat weight.