500 Cts Raw Beryl Emerald Crystals from Rwanda 2-10 mm x 4-25 mm No.:101
The mix is always random. They are in mint raw mined condition. They are made from Be. 18which of course is the mineral Beryl. Physical Properties of Beryl. Optical Properties of Beryl. Silicon 31.35 % Si 67.07 % SiO.