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- AgatesAgates are semi-precious gemstones that are a variegated form of chalcedony (pronounced kal-sed’-nee), which is silicon dioxide in the form of microscopic fibrous quartz crystals
- FossilsFind great deals for Lapidary Auctions and Mineral collecting equipment. We have the latest lapidary and mineral auctions, supplies, tools, and gear
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- Minerals or RocksTo be classified as a true mineral, a substance must be a solid and have a crystalline structure. It must also be a naturally occurring, homogeneous substance with a defined chemical composition. Traditional definitions excluded organically derived material. However, the International Mineralogical Association in 1995 adopted a new definition:
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- Tumbling GuideFind great deals for Lapidary Auctions and Mineral collecting equipment. We have the latest lapidary and mineral auctions, supplies, tools, and gear
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