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Hyalin quartz France (old collection).
Stone dimensions: L: 71mm x W: 60mm x H: 77mm.
Weight: 145g.
Hyaline quartz, also known as rock crystal, is a variety of pure quartz. It is transparent to translucent and is characterized by its absence of impurities, giving it great clarity and brilliance.
Physical and chemical properties of quartz :
Hyaline quartz is composed mainly of silicon dioxide (SiO2).
Hardness: 7 on the Mohs scale.
Density: Approx. 2.65.
