(1) Австралия: The gems that have been discovered and mined include diamond, опал, сапфир, рубин, оникс, топаз, изумруд, аквамарин, циркон, перидот, турмалин, гранат, аметист, hibiscus, Больше, чем 20 important gemstones such as rhodolite, fluorite and nephrite are written. Среди них, opal and sapphire are the most famous. Opal production accounts for 98% of the world, […]
