What gemstones is Greece known for?
Among the most important gemstones are diamond, ruby (red-colored corundum) and sapphire (blue-colored corundum), emerald and other gem forms of the mineral beryl, chrysoberyl, tanzanite (blue zoisite), tsavorite (green grossular garnet), “paraiba-type” tourmaline (copper-colored “neon”-blue tourmaline), topaz and …