If you ask any colored gemstone connoisseur, they will tell you that tanzanite is becoming the most desired gem in the United States. We also see this trend manifesting itself in Europe. American and European designers, collectors and tanzanite jewelry manufacturers are keenly aware that with only one relatively tiny and unique geological source in Tanzania, tanzanite pricing fluctuations have sometimes been extreme and tend to move with the current news and season of the year. In fact, wholesale tanzanite prices have more than doubled since early 2004, with regular price increases being passed to retailers on an ongoing basis.
It is tanzanite’s color and relative scarcity which has caused these dramatic price fluctuations. We all remember the days when one could purchase a very deeply colored tanzanite for around $300 per carat. There were even smaller tanzanites in the 1 to 2 carat range that had rich color. Just try finding one of these today! These tanzanites were mined mostly in the D shaft of Merelani Hill, just outside of Arusha, Tanzania. This area has since been depleted and new shafts have been opened. The color being produced by these new shafts is...