(1) 호주: The gems that have been discovered and mined include diamond, opal, 사파이어, 루비, 오닉스, 황옥, 에메랄드, 남옥, 지르콘, 감람석, 전기석, 석류석, 자수정, hibiscus, 이상 20 important gemstones such as rhodolite, fluorite and nephrite are written. 그중, opal and sapphire are the most famous. Opal production accounts for 98% of the world, […]
