nature of the gem mining industry in Sri Lanka

Gemstone mining in Sri Lanka is mostly from secondary deposits. The gravels yield sapphire, cat’s-eye, Chrysoberyls, spinel and many other gemstones. Sri Lanka’s gem-bearing gravels, called illam, This video showing how to mninig, traditional heating, traditional...
error: Alert: Content is protected !!
  • No products in the cart.
Close Bitnami banner