metamorphic
Blue Quartzite (Dyed Quartzite)
Silicon Dioxide (SiO2) with dye
Hardness: 7 (Mohs scale), Color: Sky blue (artificially dyed), Luster: Vitreous/waxy, Structure: Granular/microcrystalline, Cleavage: None
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Physical properties
Hardness: 7 (Mohs scale), Color: Sky blue (artificially dyed), Luster: Vitreous/waxy, Structure: Granular/microcrystalline, Cleavage: None
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure. These beads have been industrially cut, polished, and dyed to achieve the bright blue color.
Uses & applications
Primarily used in costume jewelry, beadwork, and decorative accessories.
Geological facts
Quartzite is so strong it can cut through glass. While naturally white or gray, it is highly porous, allowing it to easily absorb dyes for colorful jewelry components.
Field identification & locations
Look for color concentration in cracks or grain boundaries, which indicates dyeing. Often confused with Larimar or Aquamarine, but much harder and more common.
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