A number of U.S. states have an official gemstone, however, Louisiana's isn't really a precious stone. Here's where it's ...

Origin of recovery of gemstones -- Diamond Ruby and sapphire -- Emerald, aquamarine and other beryls -- Chrysoberyl and spinel -- Topaz and tourmaline -- Zircon, peridot and spodumene -- The garnets - ...

The Gemmological Association of Great Britain (Gem-A) has launched the latest issue of its flagship scientific publication, ...

We are the RSA. The royal society for the encouragement of arts, manufactures and commerce. Where world-leading ideas are turned into world-changing actions. Our vision is a world where everyone can ...