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en.wikipedia.org/wiki/Tanzanite

Tanzanite is the blue and violet variety of the mineral zoisite belonging to the epidote group. The gemstone was discovered by Manuel de Souza in the Mererani Hills of .... Retrieved 4 May 2018. ^ Jump up to: Richard W. Wise (31 December 2005). Secrets of the Gem Trade: The Connoisseur's Guide to Precious Gemstones.

geology.com/gemstones/tanzanite

Tanzanite is a rare blue gem and a popular alternative to blue sapphire. It is mined commercially at only one location in Tanzania.

www.tanzanitejewelrydesigns.com/pages/tanzanite-guide

The mix of violet and blue is often labeled as "mesmerizing" by owners of the gem. Like the rare gem alexandrite, tanzanite also has the ability to color change  ...

www.ask.com/youtube?q=tanzanite+precious+gems&v=QmlubgNM1gY
Mar 16, 2014 ... Due to its similarity in appearance to sapphires, Tanzanite is getting plenty of attention from jewellers as a "rising star" among colored gems.

www.tanzanitejewelrydesigns.com/collections/gemstones

Find a huge selection of loose cut AAA Tanzanite gemstones in a variety of shapes and colors. ... Tanzanite Ultra Rare Color 6.80 Carats $5,100.00 $7,548.00.

www.nytimes.com/2018/05/10/fashion/tanzanite-tiffany-reed-krakoff.html

May 10, 2018 ... (“Tanzanite is the first transparent deep blue gemstone to be ... A semiprecious gemstone named for Tanzania, where the only mine is found, ...

www.paraibainternational.com/products.php?category=4

Products 1 - 12 of 42 ... Tanzanite is now considered to be the most precious and sought after stone in the world. Tanzanite is a gem of unprecedented beauty and ...

financesonline.com/10-really-expensive-gemstones-from-tanzanite-to-pink-star-diamond

Jan 17, 2018 ... What is the most expensive gemstone in the world? ... Shopping for these precious stones for your collection tend to be confusing as prices .... I agree, look at a tanzanite (AAAA), say 2/3 carats-it's everything a blue diamond ...

knowledge.wharton.upenn.edu/article/rare-beautiful-stone-fails-shine-tanzanias-missed-opportunity

Dec 20, 2013 ... Tanzanite is one of the rarest gemstones on earth and one of the most undervalued relative to its rarity. Given its scarcity, it would be ...