tanzanite

Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of vanadium. Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Tanzania, in a very small mining area (approximately 7 km (4.3 mi) long and 2 km (1.2 mi) wide) near the Mererani Hills.Tanzanite is noted for its remarkably strong trichroism, appearing alternately blue, violet and burgundy depending on crystal orientation. Tanzanite can also appear differently when viewed under different lighting conditions. The blues appear more evident when subjected to fluorescent light and the violet hues can be seen readily when viewed under incandescent illumination. In its rough state tanzanite is colored a reddish brown to clear, and it requires heat treatment to remove the brownish "veil" and bring out the blue violet of the stone.The gemstone was given the name 'tanzanite' by Tiffany & Co. after Tanzania, the country in which it was discovered. The scientific name of "blue-violet zoisite" was not thought to be sufficiently consumer friendly by Tiffany's marketing department, who introduced it to the market in 1968. In 2002, the American Gem Trade Association chose tanzanite as a December birthstone, the first change to their birthstone list since 1912.

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  1. Mwande na Mndewa

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    MIEZI SABA BILA JPM;NOTI MPYA ILIYOPAKWA DHAHABU,ALMASI, TANZANITE INGEILETA TANZANIA MPYA KATIKA USO WA DUNIA. Leo 10:15hrs 17/10/2021 Nianze na maswali matatu yatakayotuongoza katika kujiuliza kama tunaweza kutengeneza pesa yetu na thamani yake ikapimwa kwa dhahabu,Almasi au Tanzanite...
  2. GwaB

    Another brand new AirTanzania A220-300 taking to the sky.

    Stunning view of brand new Air Tanzania with lively colors christened Tanzanite Hapa Kazi Tuu with registration code C-FOWF has been spotted at YMX on its maiden flight test and series of others thereafter. What a beautiful bird!...
  3. beth

    Rais Samia: Kuuza ovyo Tanzanite kunashusha thamani yake

    Rais Samia Suluhu Hassan amesema Madini ya Tanzanite yanapouzwa ovyo yanashusha thamani yake, akisema yanatakiwa kuuzwa kwa mpangilio maalum Ameeleza hayo leo akizungumza na Wananchi Manyara na kuongeza, "Endapo yatauzwa kwa mpangilio na kuachiwa kidogo kidogo duniani thamani yake itapanda"...
  4. M

    Story of Change Tanzanite kama Sarafu Mtandao Afrika

    WATU maeneo mbalimbali duniani wamekuwa wanasumbuka kupata 'kiwakilishi' sahihi na bora kwenye kubadilishana bidhaa toka dunia kuumbwa. Baada ya uwepo wa DOLA ya Kimarekani na EURO ya Ulaya watu wakadhani mapambano hayo yamefikia tamati. La hasha, bado yanaendelea ! Baada ya majaribio ya kadi...
  5. Kasomi

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    JE WAJUA? Ingawa madini ya Tanzanite hupatikana Tanzania pekee dunia nzima lakini hadi kufikia 2015 wauzaji wakubwa wa Tanzanite duniani walikuwa ni nchi ya Kenya🇰🇪 ikifuatiwa na nchi ya Afrika Kusini🇿🇦. - Kufikia 2021 Tanzania🇹🇿 ni nchi inayoongoza duniani kwa uuzaji wa Tanzanite huku pato...
  6. GENTAMYCINE

    Niwaambieni mapema tu nikija kuwa Rais wa Tanzania kwa Tiketi ya Mgombea Binafsi Daraja la 'Tanzanite' nitaamuru libomolewe haraka

    Nimetafuta Mantiki ( Logic ) ya Ujenzi wa Daraja hilo mpaka sasa sijaipata sana sana naona 'Maluweluwe' tupu tu. Nimejaribu Kuzungumza na Wakandarasi na Wahandisi Waandamizi wamesema hilo Daraja ni Kazi bure tu japo 99% walishiriki Kikamilifu katika Mchakato wake mzima mbele ya Hayati Mmoja wa...
  7. second lady

    Wapi wananunua pete ya Tanzanite?

    Habari wanaJF Nahitaji muongozo kama kuna mahali wananunua pete yenye kito cha Tanzanite niende nikauze yangu Natanguliza shukrani [emoji120]
  8. Replica

    Ole Sendeka: Hali ya umaskini imeongezeka Mirerani, amuomba Waziri Mkuu biashara yote ya madini ya Tanzanite iishie Mirerani

    Mbunge wa Simanjiro, Ole Sendeka ametoa Ombi kwa waziri Mkuu alipokuwa mkoa wa Manyara kuzindua kituo cha Tanzanite Magufuli, kwanza ameomba ukaguzi wa Staha kwa watu wake bila kuathiri mapato ya Serikali mgodi wa Mirerani. Pia ameomba kuongezwa chumba kimoja kwa ajili ya ugaguzi wa wanawake...
  9. Replica

    Manyara: Waziri mkuu Azindua kituo cha Tanzanite Magufuli. Astaajabishwa na Kazi kubwa iliyofanyika Ukuta wa Mirerani

    Leo waziri mkuu wa Tanzania, Kassim Majaliwa anazindua kituo cha Tanzanite Mirerani mkoa wa Manyara, kuwa nami... ======= Waziri Mkuu: Nimekuja na salam zenu kutoka kwa mheshimiwa Rais, mama Samia Suluhu anawasalimia sana wana Mererani, pia makamu wa Rais. Viongozi wetu wanawatakia mafanikio...
  10. chinembe

    Kwakuwa alituvusha salama kutoka Awamu ya Tano, nashauri daraja la Tanzanite liitwe Samia

    Ni shauri wangu Kwanza linavuka bahari, ni ishara ya kuvuka awamu moja kwenda nyingine, pili in ishara ya upatanisho kati ya upande mmoja na mwingine, kisiasa, kiuchumi, kijamii, anapatanisha nchi, anaunganisha kama daraja linavyounga pande mbili. Tanzanite ina asili ya huko ilikotoka, iwepo...
  11. Analogia Malenga

    Tutawekeza kwenye teknolojia ili watu wasikaguliwe kwa kuvuliwa nguo Mererani

    Kumekuwa na malalamiko kuhusu mgodi wa Mererani kufanya ukaguzi kwa njia ya kudhalilisha ambapo hufanywa hivyo ili mtu asiondoke na madini ya Tanzanite Katika Ukaguzi imesemekana kuwa watu huvuliwa nguo zote kwa makundi na kuanza kupekuliwa hatua ambayo inaonekana ni ya kudhalilisha Waziri...
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