There are also shape varieties which are scepter quartz, gwindel or quartzine.Ī couple of the more famous localities of fine crystalized quartz mineral specimens include the Ron Coleman Mines in Arkansas, and Arkansas in general produces some very fine quartz. Quartz has different color varieties which include smoky quartz, rose quartz, and amethyst. Quartz can also form in a geode, which is a rock cavity filled with crystals. There can also be double terminated crystals which develop without an attachment. Well-formed quartz crystals can be formed in a “bed” with one termination pyramid being visible. Quartz crystals can be twinned, distorted or even intergrown with each other. Cryptocrystalline quartz is dense, compact, and typically have microscopic crystals. Of the two, macrocrystaliine is more common and has large visible crystals or large intergrown crystals.

Quartz can develop in two different forms, macrocrystaliine and cryptocrystalline (microcrystalline). Quartz is a part of the trigonal crystal system with the ideal shape being in a six-sided prism with a six-sided pyramid at each end. It can be found all over the world (minable too) and can form at all temperatures! Due to the durability of this mineral, it can also be found in the tops of mountains and in numerous types of sand. Quartz consists of mainly silica, or silicon dioxide (SiO2) and is one of the earth’s most abundant minerals behind feldspar.

Large quartzcrystal