Gemstones, such as diamonds, rubies, sapphires, emeralds, aquamarines, and tourmalines, are __________ minerals. nonmetallic all copper ores metallic not precious
The minerals given in the question above are non metallic minerals. Non metallic minerals do not contain metal elements in their inorganic chemical formula they include; Clay, diamond, dolomite, gypsum, mica, etc, While metallic minerals are minerals which contain one or more metallic elements. They occur in rare, naturally formed concentrations known as mineral deposits.
