Tourmaline Schorl & Hyalite

Erongo Mountains, Karibib, Erongo Region, Namibia

5 × 4.5 × 4.5 cm

A superb specimen of gemmy,  hyalite opal on tourmaline schorl from the Erongo Mountains. The gemminess, yellow-green color, and sheer size of this opal are quite unusual, not something you come across very often.  Superb fluorescence.