이전에 알려진 "실론", Sri Lanka is rich in gem resources and is one of the world's five largest gem producers. 그것은 TH로 알려져 있습니다 "보석 섬". 역사적으로, employees in Sri Lanka's gems and jade often accounted for 1/3 of the country's population. The country's gem resources are rich, 다양한, 널리 분포, 얕은 [...]
