mineral

Crackle Quartz (Dyed)

SiO2 (Silicon Dioxide) - Treated

AI-generated identification · may be incorrect

Hardness of 7 on Mohs scale (due to quartz base, though structural integrity is slightly compromised by cracking). Color in this specimen is artificially dyed bright blue. Luster is vitreous (glass-like). Naturally trigonal crystal structure, but this piece is heavily fractured internally. No cleavage.…

Identified June 18, 2026More mineral →

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Physical properties

Formation & geological history

Crackle quartz is created by heating natural quartz to a very high temperature and then rapidly cooling it (quenching), usually in water. This sudden temperature change causes the stone to fracture internally. The fractured stone is then submerged in dyes, which seep into the cracks, giving it a vibrant, unnatural color.

Uses & applications

Used primarily in inexpensive commercial jewelry, beads, bead making, wire wrapping, and as decorative items for crafts. It has no industrial use and is considered a low-end material in the lapidary arts.

Geological facts

Also known as 'fire and ice' quartz when uncolored. The vibrant colors seen in crackle quartz, such as the bright blue in the image, do not occur naturally in quartz. The dye can sometimes fade over time if exposed to prolonged sunlight or water.

Field identification & locations

Easily identified by its unnaturally bright color and the distinct web-like pattern of internal fractures holding deeper dye concentrations. Can be distinguished from natural turquoise or howlite by its translucency and vitreous luster. It is very common in metaphysical shops and craft stores.