Topaz on Lepidolite with Microcline

Primarily used as a gemstone, topaz has no natural color and depends on trace element impurities or heat treatment in order to give it colors that can range from purple to blue to green to rust. It is a silicate mineral of aluminum and fluorine.

Lepidolite belongs to the mica group, and is the most abundant lithium-bearing mineral. It can be found in a variety of colors, though usually in the purple, red, and pink spectrum, caused by trace amounts of manganese.

Also known as potassium aluminum silicate, microcline is an igneous rock and potassium-rich tectosilicate mineral. It forms cross-hatch twinning and displays colors of white, light yellow, or red.