Mgambe Diamond property
The Mgambe Diamond property consists of 46 square kilometers and lies contiguous to the eastern, northern and western boundaries of the De Beers operated Williamson Mine, one of Africa’s most significant Diamond producers. The Williamson Mine is currently owned 75% by De Beers and 25% by the Government of Tanzania and has a production history that spans six decades. The Williamson pipe covers 146 ha and, at the time of its discovery in 1940, was considered the largest economically exploitable pipe in the world. In 2005 the Williamson Mine produced 190,000 carats of diamonds, adding to the more than 20 million carats that have been produced over the history of mining operations.

The Lake Manyara Emerald and Alexandrite Property
The Lake Manyara emerald and alexandrite property is a historic producer of emerald and alexandrite, having been discovered in the late 1960’s. Early descriptions of the property and its production history were first published by the famous Swiss gemologist Gubelin in 1974. His work was later referenced in a report completed in 2001 by R. Scheepers and stated that ”The deposit at Manyara is of great interest, both from an academic and economic viewpoint as three rare gemstones occur in close relationship to each other, namely alexandrite, emerald and ruby. The common denominator between these three gemstones is their color which is thought to be related to the presence of chromium and/or vanadium in the crystal structure.” In his conclusion Scheepers stated that, “The Manyara deposit may be regarded as a classical schist hosted emerald-alexandrite deposit, in many respects similar to other deposits of this kind. The gemstones are closely related to the contact between mafic schists and felsic gneisses and pegmatites. An additional aspect in the case of Manyara is the presence of shear zones along which fluids preferentially migrated, adding an exploration target to the property.”