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Azurite is a striking copper-based mineral found in shades of deep blue to vivid green
resulting from the oxidation of its copper and sulfide components
Malachite has been mined for both use in copper tools and for ornamentation and jewelry
The spectacular display of colors these specimens display can be formed by two different geological processes: the oxidation of pyrite causing ultra-thin layers of iron oxide to form on the surface
Amethyst is a form of Quartz which gets its beautiful purple tint from the substitution of silicone for iron due to irradiation
Rose Calcite Trilobite Azurite is a striking copper-based
