Chrysoprase - Tanzania - 10 pounds*Locality: Tanzania *Requires 20lbs of Shipping Space* Chrysoprase is a green colored variety of chalcedony, a type of quartz. Color: Chrysoprase typically exhibits a bright apple green to a deep green color, often with a slight translucency. Hardness: On the Mohs scale of mineral hardness, chrysoprase has a hardness of 6. 5 to 7, which means it is moderately hard. This makes it suitable for use in jewelry but requires care to prevent scratching.