Biology, 25.07.2019 06:30 coralaguilar1702

Gemstones, such as diamonds, rubies, sapphires, emeralds, aquamarines, and tourmalines, are minerals. nonmetallic all copper ores metallic not precious

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Gemstones, such as diamonds, rubies, sapphires, emeralds, aquamarines, and tourmalines, are mineral...