| http://www.w3.org/ns/prov#value | - A wide range of categories are offered within Natural History sales including: unmounted faceted and cabochon gemstones, cat???s eye and other rare phenomenal gemstones, mineral specimens, amber ??? including examples of prehistoric insects trapped in the tree sap that became amber, pearls, seashells, meteorites ??? described as out of this world debris, archeological artifacts, petrified wood p
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