Calcite

This piece is what “tonal effect” is all about. A very thin shard ,coated with either dolomite or calcite (more of a druise to tell visually) is populated by clear rhombohedrons stacked on top of each other . They protrude from the edge forming a bit of a corona effect. Pretty. Ex Geoff Krasnov collection.

Locality: Tsumeb Mine, Tsumeb, Namibia

Composition: calcium carbonate