This Specimen has been sold.
Gorgeous, 7.3" Dark Smoky Quartz Crystal Cluster - Brazil
This is a gorgeous dark smoky quartz crystal cluster from Minas Gerais, Brazil. It has not been heated, treated or polished.
Smoky quartz is a grey-brown to black variety of quartz. This common name is derived from from the appearance of smoke within the quartz crystal. Dependent on the location and the chemicals present during formation, smoky quartz can appear opaque black, however it’s typically translucent to some extent. It’s believed that the quartz gains this color from a combination of natural irradiation and aluminum impurities.