mineral
Blue Quartz (Dyed)
Silicon Dioxide (SiO2) with artificial pigment
Hardness: 7 on Mohs scale; Color: Cyan-blue (concentrated in cracks); Luster: Vitreous; Crystal system: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture.
- Hardness
- 7 on Mohs scale
- Color
- Cyan-blue (concentrated in cracks)
- Luster
- Vitreous
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Physical properties
Hardness: 7 on Mohs scale; Color: Cyan-blue (concentrated in cracks); Luster: Vitreous; Crystal system: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture.
Formation & geological history
Natural quartz forms in igneous or metamorphic environments when silica-rich fluids cool. This specific specimen has been tumbled and subjected to a dyeing process where blue pigment is forced into surface-reaching fractures.
Uses & applications
Metaphysical uses, decorative home decor, lapidary practice, and educational kits for children.
Geological facts
While blue quartz can occur naturally (usually due to inclusions of magnesio-riebeckite or crocidolite), most vibrant 'neon' blue tumbled stones on the market are artificially dyed macrocrystalline quartz.
Field identification & locations
Identify for dyeing by looking for 'pooling' of color in internal fractures and veins. Natural blue quartz is usually much more opaque and a subtle denim-grey-blue.
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