A small-scale miner from Tanzania become an overnight millionaire on Wednesday after he sold two rough tanzanite gemstones said to be the largest ever found in the country. Saniniu Laizer, 52, ...

The gem industry is divided on the recently introduced gazette allowing for the export of rough gems that some academics believe results in the reduction in the quality of Sri Lankan products. Colombo ...

Ethiopia is losing more than 90 million dollars annually because of the exports of rough gemstones, it was learnt. At a two-day consultative meeting on the mining sector held on October 7 and 8 ...

Simply sign up to the Tiffany & Co myFT Digest -- delivered directly to your inbox. It is time to redefine one of the best-known clichés in the English language. “A rough diamond” imputes true beauty ...