Fire Quartz (Cracked Quartz Sphere)
Quartz var. Crackle Quartz · Decorative Stone / Semi-Precious Gemstone
Crystal System
Trigonal, shaped into a manufactured spherical form (sphere habit)
Mineral Group
Silicates (Subgroup: Tectosilicate)
Chemical Formula
SiO2
Formation Process
Hydrothermal and pegmatitic natural formation subsequently subjected to human-made thermal shock treatment (rapid heating and cooling)
About This Crystal
A polished spherical gemstone displaying an intricate internal network of fractures, fissures, and iridescent rainbow refractions, maintaining a smooth, highly reflective outer surface with transparent to translucent properties.
Physical Characteristics
Colorless body color with white internal fracture networks, white streak, conchoidal fracture relative to the sphere's surface, specific gravity of approximately 2.65, brittle tenacity, and vitreous luster.
Optical Properties
Singly and doubly refractive with a refractive index of 1.544 to 1.553, exhibiting high dispersion and internal rainbow-like light scattering due to light diffraction across thermal fracture planes.
Hardness & Durability
Origin Region
Worldwide, commonly processed in Brazil, China, and India
Hardness & Durability
Mohs hardness of 7, though structural toughness is severely compromised due to intentional thermal cracking, making it fragile and prone to breaking along stress fractures under impact.
Care & Maintenance
Clean with warm soapy water, avoid ultrasonic or steam cleaners due to internal fractures, store separately from harder stones, and protect from sudden temperature shocks.
Rarity & Value
Common, typically inexpensive and widely available, valued mostly for decorative and metaphysical appeal rather than intrinsic mineral rarity.
Special Characteristics
Intense internal light refraction creating rainbow flashes (fire) caused by thermal stress fracturing.
Lore & History
Often marketed as Fire Quartz or Crackle Quartz in modern crystal healing, used traditionally to amplify energy, clear negative blockages, and stimulate the crown chakra, though these are metaphysical beliefs and not scientific claims.