Price per carat:$51-$108.08 Highlights ... colonies now producing only 25 percent of what they should. Highlights: Tanzanite is found only in one place in the world, and the supply will be ...

Its value is determined by rarity - the finer the colour or clarity, the higher the price. Tanzanite can only be found in northern Tanzania Mr Laizer mined the stones, weighing 9.2kg and 5.8kg ...

Its value is determined by rarity - the finer the colour or clarity, the higher the price. Tanzanite can only be found in northern Tanzania Mr Lazier urged his fellow small-scale miners to work ...