Jewellery & Gem WORLD Hong Kong 2026
场地: AsiaWorld-Expo.Hong Kong (AWE)
日期: 14 – 18 September 2026
摊位: 3B35
博客与活动
活动
博客
10 things you need to know about “Synthetic Opal”
"Synthetic opal" is somehow misused. Man-made opals differ in quality and values: from high-end Synthetic Opals, to the low-end imitation Opals. Table1: Quick overview of different man-made opals