One of the most common minerals found throughout the globe.

The brookite is a long, bladed crystal that is mildly translucent and amber-brown with backlighting.

Chlorite in quartz refers to the presence of green chlorite mineral inclusions within a quartz crystal.

Firefly Quartz (also called Firefly Petroleum Quartz or Madagascar Firefly Quartz) is a trade name for a type of petroleum-included quartz from Madagascar.

A brownish grey variety of quartz.