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Geosciences LibreTexts

16.06.0104: Carnelian

  • Page ID
    4108
  • Carnelian
    Chemical composition Silicon dioxide SiO2
    Crystal system Trigonal
    Habit Aggregate
    Hardness 6.5 - 7
    Refractive index ± 1.54
    Specific gravity 2.55 - 2.70
    Lustre Vitreous

    Figure \(\PageIndex{1}\): Carnelian cabochon