Clear Quartz
Quartz var. Clear Quartz · Semi-Precious Gemstone / Mineral Specimen
Crystal System
Trigonal, typically forms as prismatic crystals terminated by six-sided pyramids in natural form, but presented here as a tumbled and polished smooth stone.
Mineral Group
Silicates (Subgroup: Tectosilicate)
Chemical Formula
SiO2
Formation Process
Hydrothermal and pegmatitic processes, crystallizing from silica-rich solutions at varying temperatures and pressures in veins, cavities, and igneous rocks.
About This Crystal
A tumbled, polished smooth specimen of transparent to translucent colorless quartz. It exhibits a glass-like vitreous luster with internal fractures and minor inclusions characteristic of natural quartz.
Physical Characteristics
Colorless body color with a white streak. It has no true cleavage, exhibits conchoidal fracture, a specific gravity of approximately 2.65, brittle tenacity, and can display weak luminescence under certain UV conditions.
Optical Properties
Uniaxial positive with a refractive index of 1.544 to 1.553, showing double refraction and a birefringence of 0.009. It is transparent with no significant pleochroism due to being colorless.
Hardness & Durability
Origin Region
Found worldwide with major deposits in Brazil, Madagascar, the United States, and the Himalayan region. Forms in diverse geological environments.
Hardness & Durability
Mohs hardness of 7, making it durable and resistant to scratching by most common household items. It has good toughness and is highly suitable for everyday jewelry wear.
Care & Maintenance
Very durable and easy to care for. Can be cleaned safely with warm soapy water, a soft brush, or ultrasonic cleaners. Resistant to most chemicals and safe from fading in sunlight.
Rarity & Value
Extremely common worldwide. Value is generally very low for tumbled stones and common specimens, increasing only for large, flawless single crystals or specialized optical grades. Treatments are rare as natural material is abundant.
Special Characteristics
Exhibits piezoelectric and pyroelectric properties, generating an electric charge when mechanical stress or temperature changes are applied.
Lore & History
Known historically as the 'Universal Crystal' or 'Master Healer' across numerous ancient cultures including Roman, Egyptian, and Indigenous American traditions. In modern crystal healing, it is associated with all chakras and is believed to amplify energy, clarity, and intention, though these are traditional beliefs rather than scientific claims.