Hyalite Var. Opal, Rhyolite

CX SC1 Ref.

Good formations of Hyalite (opal variety) on matrix with good color and luster on a rhyolite matrix. Very aesthetic mineral. Luminescence can be seen under UV (ultraviolet light).

Hyalite Var. Opal, Rhyolite
Monok, Mt., Zemplen, Hungary
Size: 5.5x5.1 cms