Hyalite Opal Specimen -Mexico Feldspar calling it "aschenzieher" or "ash

calling it "aschenzieher" or "ash puller

Approximate Size: 4in x 3in x 2in

This unique mineral specimen features cubic pyrite a few with hints of galena

Black Hematite: An iron oxide mineral that contributes metallic

Hyalite Opal Specimen -Mexico Feldspar calling it "aschenzieher" or "ashHyalite Opal on agate matrix Hyalite opal is an unusual variety of opal found in various volcanic locations around the world. Because of its unique structure, you won't find any opalescence or "play of color" that traditional opals are known for. Instead, hyalite opal impresses when viewed under both Longwave and Shortwave ultraviolet light, fluorescing a strong green color. Its formation can be classified as amorphous, botryoidal and globular. Its