Smoky Quartz was popular in ancient times for being easy to cut and shape. The Chinese, Egyptians, Romans, and Sumerians each had practical uses for crystal, but the Druids in particular considered it of great value; For them it was sacred. So sacred, it is in fact Scotland's national stone.

SMOKY QUARTZ LIKE GEMSTONE

It is a gray and transparent variety of quartz, although it varies in clarity from transparent to dark opaque, some can even be black. Like other quartz, it is a silicone dioxide crystal. The smoky color comes from free silicone, formed from silicone dioxide by natural radiation.