Chevron Amethyst
Quartz var. Amethyst (Banded) · Semi-Precious Gemstone
Crystal System
Trigonal; typically occurs as massive, banded aggregates when tumbled, showing V-shaped chevron patterns.
Mineral Group
Silicates (Tectosilicate subgroup)
Chemical Formula
SiO2 (Silicon Dioxide) with trace amounts of Iron (Fe3+)
Formation Process
Hydrothermal; forms from silica-rich solutions in cavities of volcanic rocks or hydrothermal veins, involving alternating growth stages of amethyst and white quartz.
About This Crystal
A tumbled stone featuring alternating bands of translucent purple amethyst and opaque white to gray quartz. It displays a vitreous luster when polished and a characteristic 'V' or 'chevron' pattern of banded colors.
Physical Characteristics
Color: Purple and white banding. Streak: White. Cleavage: Indistinct/None. Fracture: Conchoidal to uneven. Specific Gravity: 2.65. Luster: Vitreous.
Optical Properties
Refractive Index: 1.544–1.553. Birefringence: 0.009. Pleochroism: Weak purple to reddish-purple. Optical phenomena: Color banding.
Hardness & Durability
Origin Region
Mainly found in Brazil, India, Russia, and South Africa.
Hardness & Durability
Mohs Hardness: 7. Extremely durable for jewelry; no cleavage makes it resistant to chipping from everyday wear.
Care & Maintenance
Safe with warm soapy water. Avoid prolonged exposure to direct sunlight as the purple color can fade. Avoid harsh chemicals and ultrasonic cleaners if internal fractures are present.
Rarity & Value
Common and affordable. Value is determined by the contrast of the banding and the depth of the purple color. Often sold as tumbled stones or decorative carvings.
Special Characteristics
Distinctive angular 'V' shape banding (Chevron pattern) representing different growth phases of the quartz crystal.
Lore & History
Historically used as a stone for protection and sobriety. In metaphysical traditions, it is associated with the Third Eye chakra, believed to enhance intuition and combine the stress-relieving properties of amethyst with the amplifying power of quartz.