Calcite

A perfect doubly terminated crystal composed of layer upon layer of thin flattened individual crystals. About 2/3 of the piece is a frosted porcelaneous color. Superb for the locality. I sold this specimen to Kenny Gay (Geologist state of NC) and he later sold me his calcite collection, so I have it again!

Locality: Taffs Wells Quarry, Tongwynlais, Cardiff, Wales

Composition: calcium carbonate