Citrine
Quartz var. Citrine · Semi-Precious Gemstone
Crystal System
Trigonal, massive to microcrystalline tumbled stone habit
Mineral Group
Silicates (Tectosilicates)
Chemical Formula
SiO2
Formation Process
Hydrothermal and igneous pegmatitic formation; natural citrine forms from the irradiation of smoky quartz or thermal alteration of amethyst
About This Crystal
A small, tumbled, pale yellow to golden quartz specimen exhibiting translucent to transparent clarity with a vitreous luster, showing internal fractures and subtle color zoning typical of tumbled quartz varieties.
Physical Characteristics
Pale yellow body color, white streak, conchoidal cleavage absence, uneven fracture, specific gravity of 2.65, brittle tenacity, and piezoelectric properties
Optical Properties
Singly refractive optic axis with uniaxial positive optical character, low birefringence of 0.009, and weak pleochroism
Hardness & Durability
Origin Region
Brazil, Madagascar, Bolivia, and the United States; typically forms in pegmatites and hydrothermal veins
Hardness & Durability
Mohs hardness of 7, good durability and toughness, suitable for daily wear in jewelry with proper settings
Care & Maintenance
Clean with warm soapy water using a soft brush, avoid harsh chemicals, and store away from prolonged direct sunlight to prevent fading
Rarity & Value
Common; natural stones command a higher price than heat-treated amethyst, but generally affordable within a low to moderate price range
Special Characteristics
Piezoelectric properties and internal microscopic fractures that catch the light
Lore & History
Historically associated with wealth, prosperity, and personal power. Frequently used in traditional crystal healing to stimulate the solar plexus chakra, though these represent cultural symbolism rather than scientific effects.