TanzaniteOne (TanzaniteOne Mining Ltd) is a gemstone mining company which exclusively mines the blue gemstone, tanzanite. TanzaniteOne Mining Ltd is located in Block C, Merelani, Tanzania. Merelani is the world's only known source of tanzanite.
TanzaniteOne Mining Ltd was founded by Richland Resources, a gemstone development and mining company who were listed on the London Stock Exchanges AIM market (AIM:RLD) in 1994 . In 2014 TanzaniteOne was sold to a private company, Sky Associates, who are now the current owners.
The tanzanite resource is a long narrow area, divided into four blocks: named " A" to "D". TanzaniteOne Mining own the licence to mine the largest area Block C. Medium scale mining is undertaken by Kilimanjaro Mining in Block A and Tanzanite Africa in Block D-extension. The Company’s neighbouring Blocks B and D are mined largely by thousands of artisanal miners who use non mechanised methods which do not allow them to mine as deep or as efficiently as Tanzanite One in C block. This poses a challenge for TanzaniteOne, notably in terms of undermining, whereby, the artisanal miners are mining into TanzaniteOne’s designated licence area to access deeper and better ventilated tunnels than their own. Ongoing security issues from the illegal mining and the lack of support from the local police and government agencies were stated as the major factor in the sale of TanzaniteOne by Richland Resources in 2015. [1]
TanzaniteOne traditionally sell only rough gemstones to wholesale customers called "Sightholders", [2] adopting a sales strategy which is based on the Debeers style of distribution where the sightholder companies are guaranteed a consistent bulk supply of the gemstone, but must purchase all quality grades of the gem as opposed to selecting the goods they require for production. [3] The role of the sightholders is to process rough tanzanite and to manufacture jewellery. They have the ability to purchase large amounts of rough and have wholesale and retail distribution networks in place to facilitate the sale of loose tanzanite and finished jewellery.
In August 2013 TanzaniteOne [4] announced they had opened an online boutique, www.tananiteoneonline, which sold tanzanite gemstones and tanzanite set gold jewellery. This is the first time the mining company has offered its gemstones to retail customers. In 2015 the website was renamed as richlandgemstones.com after Richland Resources sold TanzaniteOne.
A gemstone is a piece of mineral crystal which, when cut or polished, is used to make jewelry or other adornments. Certain rocks and occasionally organic materials that are not minerals may also be used for jewelry and are therefore often considered to be gemstones as well. Most gemstones are hard, but some softer minerals such as brazilianite may be used in jewelry because of their color or luster or other physical properties that have aesthetic value. However, generally speaking, soft minerals are not typically used as gemstones by virtue of their brittleness and lack of durability.
The De Beers Group is a South African-British corporation that specializes in the diamond industry, including mining, exploitation, retail, inscription, grading, trading and industrial diamond manufacturing. The company is active in open-pit, underground, large-scale alluvial and coastal mining. It operates in 35 countries with mining taking place in Botswana, Namibia, South Africa, and Canada. It also has an artisanal mining business, Gemfair, which operates in Sierra Leone.
Tanzanite is the blue and violet variety of the mineral zoisite, caused by small amounts of vanadium. Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Simanjiro District of Manyara Region 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.
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Simanjiro District is one of the six districts of the Manyara Region of Tanzania. It is bordered to the north by Arusha Region, to the north east by Kilimanjaro Region, to the south east by Tanga Region, to the south by Kiteto District, to the south west by Dodoma Region and to the west by Babati Rural District. The district headquarters are located in Orkesumet. According to the 2022 Tanzania National Census, the population of Simanjro District was 291,169. Simanjiro District is endowed with gemstones, being the only location on the planet that has tanzanite. Simanjiro was also where the first tsavolite was discovered.
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