Chrysoprase

The Chrysoprase, from the Latin khrysós, is a much appreciated variety of quartz chalcedony belonging to the family, the availability in nature is quite rare and that pure is difficult/impossible to find. The Chrysoprase is the first layers of rock surface, note well in the variety first choice there are dark intrusions and/or surface micro-grooves unlike the 100% pure that with an increased presence of nickel gives the hard stone the wonderful color green apple and a splendor that leaves amazed. The Chrysoprase is made today mostly in Australia, smaller amounts in deposits in Brazil, the Urals, the United States, India and South Africa. Known and used since past centuries for cathedrals, royal palaces, for exclusive and unique jewels buy by aristocrats.

• COMPOSITION: silicon oxide, nickel, chromium, manganese, calcium, zinc, iron
• CRYSTAL SYSTEM: trigonal
• HARDNESS: 6,5/7
• LUSTRE: opaque or translucent

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