Marcasite Quartz Calcite Cluster from Russia $100-$150 5" and weighs 4

5" and weighs 4

composed of syenite clasts containing fluorescent sodalite

dendritic fossils look like plants but are actually deposits of manganese oxide on limestone that has crystallized into a branch pattern that looks similar to a plant

43“ and weighs 3

fluorite also hides remarkable fluorescent properties only visible under UV light- and is actually the source of our word "fluorescent"

Marcasite Quartz Calcite Cluster from Russia $100-$150 5" and weighs 4This 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. 5 x 2. 25 and weighs 3. 65 oz