Colored by trace amounts of iron, aquamarine is a member of the beryl family, whose members also include emerald, red emerald (bixbite), goshenite (colorless), heliodor (yellow), and morganite (pink). The color ranges, depending on the relative concentrations and location of iron within the beryl crystal structure. While noted for its excellent clarity, inclusions are more prevalent (and accepted) in the more intense hues.
Cushion, Trillion
Aquamarine |
March's Birthstone |
Major Sources |
Afghanistan, Brazil, Madagascar, Mozambique, Nambia, Nigeria, Pakistan, Tanzania & Zambia |
Colors Found |
Pastel Blue to Bluish Green |
Family |
Beryl: Be3Al2Si6O18 |
Hardness |
7.5 - 8 |
Refractive Index |
1.56 - 1.60; Uniaxial (+) |
Specific Gravity |
2.68 - 2.74 |
Crystal System |
Hexagonal |
©2011 America's Collectibles Network Inc. ♦ Gerald D. Sisk, JR. ♦ Guide to Gems & Jewelery ♦ Jewelry Television™