Black tourmaline Chalcedony nodules revealing the radial pattern of

revealing the radial pattern of crystal growth

Potosí Mine

This makes them pretty forgiving for new keepers who are trying to learn how to maintain a steady humidity for their isopod enclosures

They commonly appear as distinct circles with banding as in the case of leopardskin jasper

This piece is mostly botryoidal

Black tourmaline Chalcedony nodules revealing the radial pattern ofLocale: Erongo Mountain, Namibia Approx dimensions: 3 x 2. 5 x 2. 5" Approx weight: 287g ** Loose piece on base This statuesque piece of black tourmaline, known as schorl, has the mercedes termination and glossy high luster characteristic of the Erongo region. The piece is effectively three intergrown crystals in a stepped formation, with partial crystals attached at one end. The sides are beautifully striated on the partial crystals, with more