Tourmaline var. Schorl with Hyalit  – Farm Brabant, Erongo, Namibia
 
 Deep black highly lustrous double terminated schorl crystals on matrix with intensely fluorescent hyalite. Even in mixed light, the Opal Variation glows in intense green. The tourmalines have an excellent lustre. 
 Aesthetic collector's piece from the Erongo, Namibia