Highly polished and domed, these oval AA grade Larimar cabochons are a must have. These beauties are 22 x 16mm, with a 6-7mm height on average. No two of these Larimar cabochons are exactly alike in coloring, but all of these domed cabochons are beautiful. We have been amazed about this stone for some time at A Grain of Sand. While on vacation in the Dominican Republic, I first fell in love with this stone. It's no wonder that they call it the "Jewel of the Caribbean". The robins egg blue color is natural. Only one mine in the world and it's under the ocean in the Dominican Republic. It is actually volcanic material. Some specimens have coral embedded within.