Mineral Species: Jasper var. Chocolate

Chemical Formula: SiO2

Chemical Name: Silicon Dioxide

Mineral Class: Tectosilicate

Mineral Notes: Jasper is an opaque, impure variety of silica, usually red, yellow or brown in colour. This mineral breaks with a smooth surface, and is used for ornamentation or as a gemstone. It can be highly polished and is used for vases, seals, and jewellry. When the colours are in stripes or bands, it is called striped or banded Jasper. The name means "spotted stone", and is derived from French jaspre.

Description: A very attractive specimen of Chocolate Jasper. These are extremely rare and are favoured by many collectors because of their unusual colour and texture. The resemblance to chocolate is remarkable. Almost good enough to eat!

Location: Great Dyke, Zimbabwe