mineral

Crackled Quartz (Dyed)

Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale); Color: Multicolored (artificially dyed pink and yellow); Luster: Vitreous; Crystal structure: Trigonal; Key feature: Heavy internal fracturing/crackling.

Hardness: 7 (Mohs scale)
Color: Multicolored (artificially dyed pink and yellow)
Luster: Vitreous

Identified June 19, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: Multicolored (artificially dyed pink and yellow); Luster: Vitreous; Crystal structure: Trigonal; Key feature: Heavy internal fracturing/crackling.

Formation & geological history

Natural clear quartz beads are subjected to thermal shock (heating and rapid cooling) to create internal fractures, then dyed with synthetic pigments to achieve the vibrant colors.

Uses & applications

Used primarily in costume jewelry, beadwork, and decorative accessories.

Geological facts

The 'crackle' effect is often called 'fire-and-ice' quartz. While the base material is a natural mineral, the appearance is entirely man-made through heat treatment.

Field identification & locations

Identify by looking for dye concentrated in the internal cracks and the specific 'shattered' look that doesn't reach the smooth outer surface of the bead.