Chrysoprase
An apple-green variety of chalcedony. The color is caused by tiny inclusions of nickel. Chrysoprase is cryptocrystalline, which means that it is composed of crystals so fine that they are difficult to see under normal magnification.
An apple-green variety of chalcedony. The color is caused by tiny inclusions of nickel. Chrysoprase is cryptocrystalline, which means that it is composed of crystals so fine that they are difficult to see under normal magnification.
