Tanzanite Market is Blue

The cobalt coating of the tanzanite produced an iridescence that can be seen when observing the stone’s surface in reflected light. The rectangular area near the point of this facet also highlights an area on the tanzanite where the coating did not adhere.

The folks at Sterling Canyon continue to see things that boggles our minds. The new item of interest is the report that poor quality Tanzanite is being enhanced by essentially being given a dye job to enhance its natural blue color. The only way of detecting this falsetto is to look at it under a magnifier. If you're just looking to buy something that only impresses the untrained eye, go for it.  But be cautious.  Cheap dye jobs can rub off on clothing, especially if you're sweating.   If you're looking for true blue Tanzanite, stick with Sterling Canyon or other reputable dealers.