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pyrite is an abundant sulfide mineral that despite some similarities can easily be distinguished from actual gold by its crystal form (typically cuboidal) and being much harder whereas gold is soft and malleable
with color intensity usually deepest at the termination or tip of each crystal
Azurite is a striking copper-based mineral found in shades of deep blue to vivid green
Natural copper is relatively soft and often found in intricate and unique structures
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
Rose Calcite Trilobite pyrite is an abundant sulfide
