Tanzanite is a relatively newly discovered gemstone. In 1967 it was discovered in the only deposit still on earth ...Tanzania. Tiffany & Co. was the first jeweler to market this stone as a fine gemstone in the industry. It is not a very hard stone, which throws caution to the wind when wearing it. It should be handled with care.
The most valuable and sought-after color for tanzanite is that of ultramarine to sapphire blue with a shimmering violet hue around it. To achieve this color, nearly all tanzanite is heat-treated. Daylight is the best way to view a tanzanite stone.