Nail Head Calcite | Tri-State matrix often considered one of the

often considered one of the most popular and recognizable gemstones

These stones are made up of fragments of course-grained igneous rock

The natural fossil textures are beautifully highlighted in an intricate wire wrapped bezel

or Iron Pyrite is a pale brass-yellow iron sulfate (FeS2) mineral

This item is 5” x 2” x 7

Nail Head Calcite | Tri-State matrix often considered one of theThis specimen features sharp, golden nail head calcite crystals from the historic Tri State mining district of Missouri, Kansas, and Oklahoma. The distinctive flattened crystal habit gives the appearance of nail heads, a signature form from this region. Under ultraviolet light, the calcite fluoresces, adding an extra dimension to its natural beauty. A fine example of classic Tri State mineralogy and vintage American mining heritage. This item is 4. 5