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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
from the Upper Silurian age
Azurite is a striking copper-based mineral found in shades of deep blue to vivid green
Malachite has been mined for both use in copper tools and for ornamentation and jewelry
Natural copper is relatively soft and often found in intricate and unique structures
Rose Calcite Trilobite The spectacular display of colors
US$ 30.00
US$ 22.00
US$ 24.00
US$ 15.00
US$ 114.00
US$ 2750.00
US$ 2150.00
US$ 1650.00
US$ 500.00
