Emerald on calcite
Well-formed hexagonal crystals of emerald on calcite. Emerald is a variety of beryl (beryllium aluminum silicate). The green colour is attributed to small amounts of chromium
Picture No
10711149
Media ID
47584853
Size
4429px x 4340px
(4.4MB)
Credit
Mary Evans / Natural History Museum
Source
Photograph from the Natural History Museum Collection
