Dimensions (mm)15.13 x 9.84 x 6.34mm. Weight (carats)5.8 carats. Aquamarine, named for the latin phrase "water of the sea", is the blue to blue-green variety beryl. Beryl also contains other gem varieties, including emerald, and some lesser known varieties such as morganite and heliodor. The green hues in most aquamarine can also be removed through heat treatment.This item is made of aquamarine.