There are many different cuts of diamonds to choose from. The cut essentially refers to the shape that the diamond is cut into – unless you are in the diamond or jewelry business, but this shape has a great impact on the much the diamond sparkles.

The most popular cuts are heart, marquise, oval, pear, princess, round, trillion, and emerald cuts. The shape has an impact on how much the diamond sparkles, but the actual cutting itself – when the diamond cutter actually cuts the diamond into a particular shape – also matters a great deal. If the diamond is poorly cut, it will lose its sparkle.

However, in the diamond industry, the cut of a diamond doesn’t refer to its shape at all. Instead, this is a reference to the stone’s depth, width, brilliance, durability, clarity, and other aspects of the diamond. Common cutting problems include a missing or off center culet, misalignment, a diamond that is too thick or too thin, cracks, or broken culets.

When shopping for a diamond, you should of course choose the shape that you like the best, but then look at several different diamonds of that shape to find the one with the best cut –the one that sparkles the most, in all types of lighting.

Diamonds are measured in Carat Weight. One carat weighs 200 milligrams. If a diamond is referred to as four grains, this also means that it is a one carat diamond. The word Carat comes from the word carob. A carob is a bean that grows on a tree in the Mediterranean. In times past, if a diamond weighed the same as a carob bean, it was one carob, or one carat.

However, in the far east, where Carob trees do not grow, rice was used to measure the
weight of a diamond. If a diamond weighedas much as four grains of rice, it was four grains – or one carat as we know it to be now. The majority of diamond purchases are for diamonds that are 1/3 of a carat.

Beware when shopping for diamonds that are already set or mounted. If more than one
diamond is used in the piece, the tag on the jewelry will give the CTW or Carat Total
Weight – it does not tell you the carat weight of each stone in the piece. You need to ask the jeweler for the total carat weight of the largest diamond in the piece to truly
understand what you are buying.