A small-scale miner in Tanzania has become an overnight millionaire after selling two rough Tanzanite stones - the biggest ever find in the country. Saniniu Laizer earned £2.4m ($3.4m ...

The third discovery by Saniniu Laizer weighed 6.3kg (14lb). Tanzanite is only found in northern Tanzania and is used to make ornaments. It is one of the rarest gemstones on Earth, and one local ...