Double Terminated Quartz Crystal Cluster from Minas Gerais, Brazil metallic Analysis of the tourmaline crystals

Analysis of the tourmaline crystals showed them to be a mixture of dravite and uvite (Blue Dravite-Uvite Tourmaline from Koksha Valley

These beautiful amethyst crystals slowly precipitated from the silica-rich groundwater in a radial pattern in the narrow voids

The copper has been given patina through oxidation and then polished to a beautiful shine

and colors

Double Terminated Quartz Crystal Cluster from Minas Gerais, Brazil metallic Analysis of the tourmaline crystalsDouble terminated clear quartz crystal cluster. There are multiple rainbows and the clarity is excellent. Size: 113 x 47 x 40 mm. 70 grams. From Minas Gerais, Brazil