Tanzanite colours perception of gem rankings

It has been 40 years since the first discovery of the tanzanite gemstone in Merelani, Tanzania, by a Masaai tribesman in a mountainous region 40-km south of Mount Kilimanjaro, but the precious mineral is, in the last few years, becoming more...

Tanzanite mine to implement sorting technology

The world’s leading coloured gemstone mining company African Gem Resources (Afgem), intends commissioning the MikroSort opto-electronic sorting equipment in an application ‘a thousand times rarer than diamonds’.

Control measures to be adopted to safeguard tanzanite trade

The Tanzanian government said that it would implement new control measures to oversee the trade in the semiprecious gemstone, tanzanite, following reports that proceeds from its sale were being used to fund terrorism.