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Beautiful amethyst geode from Morocco, old collection.
Stone dimensions: L: 127mm x W: 69mm x H: 97mm.
Weight: 516g.
Amethyst is a variety of violet quartz with the chemical formula SiO2 (silicon dioxide).
Hardness 7 on the Mohs scale.
Density: 2.65.
Other amethyst specimens are also available in our amethysts category, with different forms, origins and mineral associations.
