News and important information from Lannan Jewelry Services — Carob trees

About Diamond WeightsDiamonds 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 weighed as much...