Amethyst
Quartz var. Amethyst · Semi-Precious Gemstone
Crystal System
Trigonal, shaped into a multifaceted faceted pendulum or cut habit
Mineral Group
Silicates (Tectosilicate subgroup)
Chemical Formula
SiO2
Formation Process
Hydrothermal and pneumatic processes in volcanic cavities (geodes) at low to moderate temperatures
About This Crystal
A carved and polished pendulum featuring a multifaceted top and a tapered, pointed bottom. The specimen exhibits translucent to transparent transparency with vitreous luster, displaying characteristic purple to violet color zoning with lighter zones towards the tip.
Physical Characteristics
Color ranges from pale lilac to deep purple; white streak; no true cleavage; conchoidal fracture; specific gravity around 2.65; brittle tenacity; exhibits piezoelectricity
Optical Properties
Uniaxial positive optical character with two refractive indices (1.544-1.553), weak birefringence (0.009), and weak dichroism showing reddish-purple and bluish-purple hues
Hardness & Durability
Origin Region
Brazil, Uruguay, Madagascar, Zambia, United States
Hardness & Durability
Mohs hardness of 7; fair toughness due to lack of cleavage, but sensitive to thermal shock and prolonged direct sunlight
Care & Maintenance
Clean with warm soapy water using a soft brush; avoid harsh chemicals, ultrasonic cleaners, and prolonged direct sunlight to prevent fading
Rarity & Value
Common; value depends on color saturation, clarity, and size; typically affordable with common heat treatments used to enhance or alter color
Special Characteristics
Displays natural color zoning, piezoelectric properties, and is commonly shaped into dowsing pendulums
Lore & History
Historically used by ancient Greeks and Romans to prevent intoxication; associated with royalty, peace, and spiritual growth; traditionally linked to the Third Eye and Crown chakras in crystal healing practices