3.9" Natural Red Ferruginous Quartz Crystal Cluster Mineral Specimen Meknes Morocco Spinosaurus Tooth The brittle stars are easily

The brittle stars are easily identified by their five flexible arms and compact central body

it was often used in intaglio carvings for seals and cameos

phytosaurs are a classic example of convergent evolution

known as "brimstone

and medical applications

3.9" Natural Red Ferruginous Quartz Crystal Cluster Mineral Specimen Meknes Morocco Spinosaurus Tooth The brittle stars are easilyLocation: Tarya Mine, Tinejdad, Er Rachidia Prov, Meknes Tafilalet, Morocco Weight: 11. 9 Ounces Dimensions: 3. 9 Inches Long, 2. 1 Inches Wide, 2. 1 Inches Thick The item pictured is the one you will receive. Quartz Crystal, commonly called quartz, is a silicon dioxide mineral (SiO2) composed of silicon and oxygen atoms arranged in a continuous framework of SiO4 tetrahedra. It is the second most abundant mineral in Earths continental crust, following