Smoky quartz
Smoky quartz is a variety of quartz that is colored by an admixture of aluminum, sodium and lithium. It is a fairly common gemstone that is often sought after for its dark brown colour. It has a shiny and transparent surface and is often mined in the form of crystals or geodes.
It is used in the jewellery industry as well as in medicine. It is hard and durable, which is why it is often used to make jewellery such as necklaces, bracelets, rings and earrings.
