Marcasite Quartz Calcite Cluster from Russia agate Its rich color variations include

Its rich color variations include deep red

This item is 6" x 4" and weighs 15

This item is 4" x 3

This item is 1” x 1” and weighs 2 oz

Trilobites are an extinct class of marine arthropods that thrived for nearly 270 million years

Marcasite Quartz Calcite Cluster from Russia agate Its rich color variations includeThis 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 1 x 1 and weighs 2 oz