More to explore:
Dravite crystal exhibiting the "Usambara effect" color change (named after nearby mountains) / Nchongo, Umba Valley, Tanzania
"Valley of the Crystals", Mt Roraima, Canaima National Park, Bolivar, Venezuela by Brad Wilson, DVM via Flickr
Tanzanite now in the jack halpern collection Merelani Hills, Umba Valley, Arusha District, Tanzania
Large gem Tanzanite crystal, Merelani Hills, Umba Valley, Lelatema Mts, Arusha Region, Tanzania.
♥ ♥ ♥ Aquamarine on Muscovite, Fiker Mine, Nagar Region, Pakistan
Tanzanite- Tanzania by marleis via indulgy
Tanzanite. (Click through and search on "Tanzanite" to find this specimen.)
Tanzanite with Prehnite Merelani Hills, Lelatema Mtns., Arusha Region, Tanzania. 2.8 x 1.5 x 1.1 cm
Silver Crystals | Flickr - Photo Sharing!
Tanzanite crystal / Merelani Mines, Arusha, Tanzania
Stone Crystal Prism by MysticPrismStudio on Etsy