Chemical Composition: Beryllium Aluminium Sillicate, Be 3 Al 2 (SiO 3 ) 6
Refractive Index: 1.57 - 1.60
Specific Gravity: 2.65 - 2.80
Crystal System: Hexagonal
Moh's Hardness: 7 ½
Aquamarines are apart of the Beryl family and is coloured by iron. The colour’s can range between a blue, green-blue and a light green.
The preferable colour of the Aquamarine is blue, some of the stones in the
market have been heat treated to rid of yellowish, greenish blue tinge and the
result is a blue colour, which is stable.
Localities include Brazil, Madagascar, USA, Zambia, Zimbabwe