Tanzanite

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 Tanzanite is a blue variety of the zoisite mineral and forms with organic hues ranging from violet purple to deep blue. Tanzanite is said to be a thousand times rarer than the diamond and with only a few known natural deposits in the world, is set to become even more precious and collectable. Tanzanite is the ideal birthstone for December, along with turquoise, with its cool blue tones.
Country of Origin:  Tanzania