Mining for heavy gems


https://www.dailymirror.lk/author//     Follow

The National Gem and Jewelry Authority (NGJA) is to tap heavy and bigger gem stones through deep mining called Primary Insitu Deposit for Sapphire Mining (PISM) which is a new vista in gem mining in Sri Lanka, Environment Minister Anura Priyadharshana Yapa said today. (SAJ)



  Comments - 19


You May Also Like