Colour: Most commonly red, but may be yellow, brown, green or (rarely) blue
Crystal System: Hexagonal
Transparency: opaque
Lustre: Vitreous: This luster resembles broken glass, offering a bright and glassy shine. It's common in transparent and translucent minerals like quartz or calcite.
SiO2
Type: Gemstone
Mohs Hardness: 7

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