Africa Gems Africa is best known as the leading source for diamonds, but the colored gemstone business has been growing rapidly in more than a half dozen different countries. Colored stone deposits are mainly in eastern and southern Africa, especially Kenya, Tanzania, Mozambique and Madagascar.
To date Tsavorite has only been produced in gem quality material from rocks of the Mozambique Belt. Although the Mozambique Belt extends from Madagascar in the south northwards through Mozambique, Tanzania, Kenya, Ethiopia, and the Sudan, mines that produce fine gem quality on a regular basis are only found in Kenya and Tanzania.
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Colorchanging Garnet is an interesting form of this gemstone that has a different color when viewed in natural and incandescent lighting. It can have several color combinations, especially brown or orange in daylight to a pink or light red in incandescent light. Garnets occasionally displays asterism in the form of fourrayed stars. However ...
Geology of Tunduru and the East African Gem Belt East Africa contains many primary gemstone deposits. These deposits can essentially be split into three categories based on their geology (Keller, 1992). The first of these is deposits related to the billion year old Tanzanian Shield that makes up a large portion of central Tanzania.
Other Industrial Minerals exploited include gypsum which is mined in Tana River in the Coastal belt, Kajiado near Nairobi and in Turkana in North Western Kenya. The Gypsum mined is supplied to local cement plants and some is exported to Uganda Gemstones: Kenya boasts of a wide range of coloured and ornamental stones, which are mined in the country.
Mining news and indepth feature articles on the latest mining company deals and projects covering trends in mineral exploration with up to date data on the most mined metal and mineral commodities
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The finest coloured gemstones – loose or set as centrepieces and embellishments in finished jewellery – will once again be among the focal points at the September Hong Kong Jewellery Gem Fair.. The Fine Gem Pavilion, an iconic zone located in Hall 9 of the AsiaWorldExpo (AWE), will feature more than 70 of the world's top suppliers of coloured gemstones, including rare gemgrade ...
Zambezia Morganite Gemstone Zambezia Morganite is the name we use for Morganite from Mozambique that shows is distinct and exceedingly rare peachy colour that is warm, soft and inviting. It applies to those gems with a more salmon pink hue – more serene and delicate than those from elsewhere in the world with a more vibrant, sharp pink hue.
Tourmalines can be found in many countries of the world, but some of the countries with vast deposits include Brazil, Sri Lanka, Afghanistan, Pakistan, and Africa such as Tanzania, Nigeria, Madagascar, Kenya, Mozambique, Zimbabwe, etc. Tourmaline with other gemstones in Nigeria can yield the country billions of naira when being mined effectively.
Although named after the Tsavo East National Park in Kenya, tsavorite (sometimes called tsavolite) was first discovered in Tanzania in 1967. This gemstone became popular via a marketing campaign by Tiffany Co. in the 1970s. Tsavorites receive their prized green color from traces of .
Our natural untreated sapphires offer true beauty, rarity and superior value compared to treated sapphires. We offer a vast selection of blue sapphires, pink sapphires, yellow sapphires, white sapphires and other unique natural sapphires. All of our sapphires are cut on our premises and are available loose or mounted in a custom setting.
A tsavorite deposit is mined at Kalalani, south of the city of Umba, among other gemstone deposits such as ruby, sapphire and colourchange garnets ( Pinna et al., 2004 ). Tsavorite occurs in nodules within graphitic gneiss and in placers within the Umba river ( Pardieu and Hughes, 2008 ).
It is always interesting to read about the countries which are treasure lands for some of the most wonderful varieties of gemstones on Earth. This article brings forth the list of the biggest producers of some of the most eyecatching and enthralling stones which include gems like emeralds, opals, jade, sapphires, rubies etc.