Jasper consists of a granular structure and some conchoidal fractures. Black Jasper towers wear a polished vitreous surface, with six sides and smooth edges, a silver sheen when in contact with bright lights.
Jasper consists of a granular structure and some conchoidal fractures. Black Jasper towers wear a polished vitreous surface, with six sides and smooth edges, a silver sheen when in contact with bright lights.