CHROME TOURMALINEVery Fine Gemstone: Tourmaline var. Chrome - 26.58 Ct.
Merelani Hills, Lelatema Mts, Simanjiro District, Manyara Region, Tanzania
If you had to pick a place where exotic gems occurred in great variety, it would be hard to beat the Merelani Hills area of Tanzania. What's really scary about the place is not just how many different varieties are found there; it's how good many of those gem crystals are when compared to identical types of material from elsewhere. A case in point: the Tourmaline found there contains high levels of Chromium and Vanadium; this is not a common sort of thing with Tourmaline. Those high levels of Cr & V cause the Merelani material to show a beautifully clean green color, unlike the normal green seen in crystals from other places. Here, that rare combination has resulted in an exquisite mixed cut oval showing saturated green color with no hint of the brown that is typically seen in green Tourmalines. "Kelly Green" is only rarely observed in gemstones and all of them contain Chromium as an essential ingredient. The accompanying cert from the AGL (# CS 65958) reinforces that assessment by stating that the color of this stone is, in their estimation, simply "green" with no other modifiers. The rough that it was cut from was found in 2004. It is eye clean in clarity and considerably larger than normal for this material.
Measurements: 22.61 x 17.36 x 10.81 mm, 26.58 cts.
Offered at no reserve.
Provenance: Rainbow of Africa Collection
Accompanied by AGL Certificate # CS 65958
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