Marcasite Quartz Calcite Cluster from Russia marine These specimen fluoresce beautifully under

These specimen fluoresce beautifully under blacklight

While gem-quality ruby represents the transparent form of this mineral

the rocks are usually found in Oklahoma’s Garber sandstone formations

5” x 2” x 3" and weighs 1 lb 4

with gentle patterns made up of fibrous layers

Marcasite Quartz Calcite Cluster from Russia marine These specimen fluoresce beautifully underThis beautiful cluster from Russia features shimmering marcasite, quartz, and calcite that fluoresces under UV light. Marcasite is made of iron sulfide, with the same chemical formula as pyrite, though it forms in a different crystal structure. It typically appears metallic and pale bronze with a bright reflective luster. This item is 2 x 1 and weighs 1. 5 oz