Clear Quartz
Quartz var. Clear Quartz · Semi-Precious Gemstone and Mineral Specimen
Crystal System
Trigonal, typically forming prismatic crystals terminated by six-sided pyramids
Mineral Group
Silicates, specifically Tectosilicates
Chemical Formula
SiO2
Formation Process
Hydrothermal and pegmatitic crystallization from silica-rich solutions at varying temperatures and pressures
About This Crystal
A small, translucent to transparent, whitish or clear tumbled stone showing a vitreous luster with smooth, rounded contours characteristic of tumbled or water-worn minerals
Physical Characteristics
Color is colorless to white, white streak, conchoidal fracture, lack of distinct cleavage, specific gravity of approximately 2.65, brittle tenacity, and generally non-fluorescent under standard UV light
Optical Properties
Uniaxial positive optic sign, refractive index of 1.544 to 1.553, low birefringence of 0.009, and singly refractive to doubly refractive depending on the light path
Hardness & Durability
Origin Region
Worldwide, with significant deposits in Brazil, Madagascar, the United States, and the Himalayan regions
Hardness & Durability
Mohs hardness of 7, making it durable for daily jewelry wear, resistant to scratching by most common household materials, with good toughness and stability against normal environmental conditions
Care & Maintenance
Safe to clean with warm soapy water and a soft brush, avoid harsh chemicals or sudden extreme temperature changes, and store separately to prevent scratching softer gemstones
Rarity & Value
Very common and widely abundant globally, making it extremely affordable with value primarily determined by size, clarity, and specific cut or polish
Special Characteristics
Displays piezoelectric and pyroelectric properties, sometimes hosting inclusions such as rutile needles, water bubbles, or phantom growth lines
Lore & History
Historically revered by ancient civilizations including the Romans, Greeks, and indigenous peoples as sacred ice or a manifestation of divine power; traditionally known in crystal healing as the 'master healer' associated with all chakras and amplification of energy