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Tanzanite - a rare gemstone: HMM “Rock”

Tanzanite - a rare gemstone: HMM “Rock”

Tanzanite - a variety of the mineral zoisite. Happy Macro Monday! 😊

The tanzanite stone shown here was given to me by a good friend who purchased it as a loose stone during his travels abroad. I had it custom set into this 1” long white gold and diamond pendant by Lucas at ‘Creations Lucas’ in Ottawa.

www.creationslucas.org/

Zoisite: “Zoisite is a silicate of calcium and aluminum with the composition Ca2Al3(Si3O7)(SiO4)(O,OH)2.” [1].

Tanzanite: “From deep in the foothills of Mount Kilimanjaro in Tanzania comes tanzanite, a gemstone with only a single known source that has become one of the most intriguing and desirable precious gemstones of modern times. It is a variety of the mineral zoisite and varies from blue, to violet, or purple in colour. Described as ‘a geological phenomenon’, tanzanite is 1,000 times more rare than diamonds” [2].

“In 1967 a Masai tribesman discovered a unique variety of the mineral zoisite at the foothills of Mount Kilimanjaro, in Tanzania, east Africa,” explains Melvyn Kirtley, chief gemologist at Tiffany & Co.“ The find was momentous. It was the first transparent blue gemstone discovered in hundreds of years, and represented a whole new species of gemstone” [3].

Originally only available in either Tanzania or Tiffany’s, (in 1968 they were the first jeweller to introduce tanzanite), Tanzanite jewellery is extremely valuable and coveted, both for the gem’s rarity, as well as its beauty” [2]. “Although only discovered in the late 1960s, it has quickly established itself as one of the premier gemstones in the world” [4].

Sources: [1] hyperphysics.phy-astr.gsu.edu/hbase/Minerals/zoisite.html
[2] www.shimansky.com/discover-tanzanite/tanzanite-grading/co...
[3] www.telegraph.co.uk/luxury/jewellery/paper-flowers/histor...
[4] www.gia.edu/tanzanite-quality-factor

(plus d'infos...)

Photo prise le 9 septembre 2018 (© joanneclifford / Flickr)

Voir aussi :
 tanzania, tiffany & co., mineral, gemstone, jewelry, xf60, macro, fujifilm, creations lucas, diamond, white gold, pendant, hmm, macro monday, macro mondays, rock, zoisite mineral, tanzanite
 

Photos Tanzania