Chrysoprase is the most expensive variety of the mineral chalcedony, which has a green color. The color is due to the nickel salts it contains. Widely used in the jewelry industry. There is a belief that chrysoprase brings good luck; according to legend, Alexander the Great wore it in his belt during battles.
You can see chrysoprase stone for sale and buy it in the Minerals of Russia online store.
General | |
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Category | Mineral |
Formula (repeating unit) |
SiO2 |
Crystal system | Trigonal |
Identification | |
Color | Olive to applegreen |
Crystal habit | Microcrystalline aggregates |
Cleavage | None |
Fracture | Conchoidal, granular |
Tenacity | Brittle |
Mohs scale hardness | 6.0–7.0 |
Luster | Greasy, waxy |
Diaphaneity | Nearly opaque to nearly transparent |
Specific gravity | 2.651-2.91 |
Birefringence | 0.004-0.009 |
Dispersion | None |
Ultraviolet fluorescence | None |