Chrysoprase — specimen 0182, photo © NMNHS
Chrysoprase — specimen 0182
Weight: 2.53 ct; size: 10.17 | 8.23 | 4.51 mm; shape: oval; colour: medium very slightly bluish green; very slightly greyish; clarity: translucent; cut: fair; treatment: none.
Clean specimen; cabochon style cut.
More information from ‘Classification’
A green variety of chalcedony. The colour is caused by tiny inclusions of Ni-bearing layers silicates.