gemstone
Amethyst and Obsidian Bracelet
Silicon Dioxide (SiO2) and Volcanic Glass
AI-generated identification · may be incorrectHardness of 7 for amethyst and 5 to 5.5 for obsidian; purple and black colors; vitreous luster.
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Physical properties
Hardness of 7 for amethyst and 5 to 5.5 for obsidian; purple and black colors; vitreous luster.
Formation & geological history
Amethyst forms in hydrothermal veins and gas cavities of volcanic rocks, while obsidian forms from rapidly cooling felsic lava.
Uses & applications
Primarily used in jewelry and metaphysical practices.
Geological facts
Amethyst was once as valuable as ruby and emerald, while obsidian was historically used to make sharp cutting tools.
Field identification & locations
Easily identified by the distinct purple banding of amethyst and the deep black, reflective surface of obsidian.
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