Loose Gemstones and Crystal Uses

This site is dedicated to finding all-purpose uses for gemstones and crystals especially ones that have no name. Over the years myself and others have found gemstones in our collections and various trinket boxes that are very difficult to name. Some have been artificially coloured, some are simply very obscure and some are just impossible to place as they look like any number of other stones. Some exercises call for a specifically coloured stone if you have one.