This Specimen has been sold.
2.8" Clear Crystal - Brazil
This is a 2.8" wide, natural clear quartz crystals from Brazil with good a termination. The color is natural and the crystals have not been heated or treated.
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.