Crackled Amethyst
Quartz var. Amethyst · Semi-Precious Gemstone
Crystal System
Trigonal, shaped into polished spherical beads with intentional thermal fracturing
Mineral Group
Silicates
Chemical Formula
SiO2
Formation Process
Hydrothermal veins and volcanic cavities, followed by artificial heat-treatment to induce fracturing
About This Crystal
Spherical polished beads displaying deep purple to translucent violet color zones, characterized by an internal network of web-like fractures caused by thermal shock
Physical Characteristics
Vitreous luster, white streak, conchoidal fracture, specific gravity of approximately 2.65, brittle tenacity
Optical Properties
Uniaxial positive, refractive index of 1.544 to 1.553, low birefringence
Hardness & Durability
Origin Region
Globally sourced, frequently manufactured in Brazil, China, and India
Hardness & Durability
Mohs hardness of 7, but low structural durability due to the intentional internal fracturing which makes the beads prone to breakage under stress
Care & Maintenance
Clean with warm soapy water, avoid ultrasonic cleaners and harsh chemicals due to internal fracture lines, store away from direct sunlight to prevent fading
Rarity & Value
Common, widely available as inexpensive tumbled stones, beads, and jewelry items
Special Characteristics
Internal fracture network that creates a shattered or webbed light-catching visual effect
Lore & History
Often used in modern crystal healing to symbolize emotional release, transformation, and breaking old patterns, associated with the Third Eye and Crown chakras