Diamonds are measured in Carat Weight. 1 carat weighs 200 milligrams. If a diamond is referred to as four grains, this also indicates that this is a one carat diamond. The term Carat comes through the term carob. A carob can be a bean that grows on a tree from the Mediterranean. In times previous, if a diamond weighed the same being a carob bean, it was a person carob, or 1 carat.

However, within the far east, in which Carob trees will not improve, rice was utilized to measure the excess weight of a diamond. If a diamond weighed as much as four grains of rice, it had been four grains - or 1 carat as we know it to get now. Virtually all diamond purchases are for diamonds which might be 1/3 of a carat.

Beware when purchasing for diamonds that are currently arranged or mounted. If greater than a single diamond is used in the piece, the tag in the jewellery will give the CTW or Carat Entire Pounds - it doesn't inform you the carat weight of each stone while in the piece. You need to consult the jeweler with the whole carat bodyweight with the biggest diamond inside piece to actually have an understanding of what you are purchasing.