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sometimes including growth rings
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
petrified wood is not wood at all but rather the fossilized remnants of trees from millions of years ago
silky and lustrous texture of these fibrous Malachite specimens from Congo combined with the incredibly rich color make them deservedly popular among collectors
have a high degree of clarity and cover the majority of the quartz surface
Megalodon Tooth Crab sometimes including growth rings
US$ 64.00
US$ 58.00
US$ 48.00
