A gemological tour of Sri Lanka's gemstones. A wealth of gemstones lies under the soil of Sri Lanka: sapphire, ruby, 's-eye chrysoberyl, spinel, garnet, beryl, tourmaline, topaz, quartz, and many others. ... Eco-Mining: Of the 6,500 licenses issued for mining in 2013, more than 6,000 were for pit-mining operations. In this type of mining ...Web