Image: Photo by and (c)2015 Derek Ramsey (<a href="https://en.wikipedia.org/wiki/User:Ram-Man" class="extiw" title="en:User:Ram-Man">Ram-Man</a>) (CC BY-SA 4.0)
trigonalcommonSilicates
Quartz
SiO2
A cluster of well-formed, prismatic amethyst crystals displaying a vibrant purple color, with some areas showing lighter hues.
Quartz Physical Properties
Mohs Hardness
7Crystal System
trigonalLuster
vitreousStreak Color
whiteCleavage
noneFracture
conchoidalSpecific Gravity
2.65Colors
purpleTransparency
transparentMineral Group
SilicatesUses
jewelry, industrial, collectorAssociated Minerals
feldspar, mica, calciteRarity
commonGeological Context
Quartz is one of the most abundant minerals in Earth's crust, forming in various igneous, metamorphic, and sedimentary environments. Amethyst, a purple variety, typically crystallizes from silica-rich fluids in hydrothermal veins and vugs, often associated with volcanic activity.
