Sebelumnya dikenal sebagai "Ceylon", Sri Lanka is rich in gem resources and is one of the world's five largest gem producers. Ini dikenal sebagai "Pulau Permata". Secara historis, 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, beragam, didistribusikan secara luas, dangkal [...]
