Smoky Quartz is a variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-gray or black crystal. The color of smoky quartz is produced when natural radiation, emitted from the surrounding rock, activates color centers around aluminum impurities within the crystalline quartz.
Chemical Formula: SiO₂
Hardness: 7
***NOTE TO BUYER***
This is a "random selection" listing. You will NOT receive the exact item photographed in the listing, but one that is very similar. However, due to the unique nature of each mineral, the size, shape, and color may vary slightly.
Please reference secondary photos for examples of variations within the product. If you have certain specification requirements, please reach out via email.
