Well, because it is found in an area that is only 4km by 2km long- in the foothills of Mount Kilimanjaro in the Manyara Region of Northern Tanzania. This would lead to an obvious assumption that Tanzanite is a very expensive gemstone. Well, it is, but not as much as diamond! Currently, the worldwide wholesale market for rough tanzanite is estimated at US$50 million
If you are one who is looking at purchasing tanzanite in bulk for jewellery making, please visit us on www.irisgems.com