(1) أستراليا: The gems that have been discovered and mined include diamond, opal, الياقوت, روبي, onyx, التوباز, الزمرد, aquamarine, الزركون, peridot, التورمالين, العقيق, جمشت, hibiscus, More than 20 important gemstones such as rhodolite, fluorite and nephrite are written. فيما بينها, opal and sapphire are the most famous. Opal production accounts for 98% of the world, […]
