Aquamarine
Hardness: 7,5-8 Color: light blue, sea-green, sky-blue Formula: Be3Al2(Si6O18) Crystal System: hexagonal (dihexagonal dipyramidal) Aquamarine belongs tot he family of beryl. It got its name from the latin aqua marina (sea-water) words, wich is a really snappy name becouse it’s once bluish and another time greenish. It is the talisman gem of the sailors. Aquamarine...