Minerals identify

Know how to recognize them

Smoky_quartz

Silicate mineral

Smoky quartz is a brownish grey, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-gray or black crystal. Like other quartz gems, it is a silicon dioxide crystal. The smoky colour results from free silicon formed from the silicon dioxide by natural irradiation.

Identification

Mohs scale ( mineral hardness )

7

Density ( specific gravity )

1.543
1.552

Crystal ( diaphaneity )

Α-quartz:trigon