Quartzite
Quartzite

Quartzite Value, Price, and Jewelry Information


Quartzite is a rock made up of tightly packed quartz grains. Sometimes, it contains small crystals that reflect light. This material is called aventurine.

0
Quartzite
Quartzite (Sioux Quartzite, Paleoproterozoic, 1.65 to 1.70 Ga; Sioux Falls area, city of Sioux Falls, Transcontinental Arch, southeastern South Dakota, USA) by James St. John, on Flickr

Comments

 A rock made up of tightly packed quartz grains, formed at high temperature and pressure, due to metamorphism. Sometimes it contains small crystals that reflect light, and this material is called aventurine. Usually the included crystals are green, chrome-rich mica called fuchsite. Other micas that may form aventurine include gray varieties or brown types (from Chile). The density is usually 2.64-2.69. Occurrence: Spain; Russia; India; Chile.

Stone Sizes

Quartzite and milky quartz are massive varieties available in large pieces.


International Gem Society

Never Stop Learning

When you join the IGS community, you get trusted diamond & gemstone information when you need it.

Become a Member

Get Gemology Insights

Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!