aquamarine

Aquamarine is a pale-blue to light-green variety of beryl. download notifikasi bts The color of aquamarine can be changed by heat (though this practice is frowned upon by collectors) Aquamarine has a chemical composition of Be 3 Al 2 Si 6 O 18, also containing Fe 2+ It has a hardness of 7 5–8 on the Mohs scale