Tanzanite is a gemstone that is only found in one place in the world, Tanzania, Africa. The singularity of origin makes this stone a rarity. A deep blue core surrounded by a purple tint is the truly striking and extravagant color that characterizes the gemstone. Tanzanite is usually heat-treated to produce a richer and deeper color of blue and purple. Heat treatment of this beautiful gemstone is universal and has no impact on the price or value. Tanzanite is a polychromatic stone, meaning that it appears to alternate its colors, even appearing different colors under different light sources. Tanzanite is generally recognized as being discovered around the early to mid 1960’s and was quickly proclaimed world-wide as the “Gemstone of the 20th Century.” Tanzanite is a recognized birthstone for December.