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

5" and weighs 4

Stromatolites are layered colonial sedimentary structures predominantly formed by photosynthetic microorganisms

The distinctive flattened crystal habit gives the appearance of “nail heads

There is slight damage to the top point

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