San Luis Potosi,
2.1 X 1.6 x .8 CM (thumbnail)
A pair of perfect small Fluor Buergerite crystals are laying on contrasting matrix. From the type locale, this rare member of the Tourmaline group is only available from older pieces like this, none has been found for decades. No damage, a well composed thumbnail.
Unusually well formed thumbnail of the rare Tourmaline specie Fluor-Buergerite from the type locality. These were found just once in the 1960 era and not since. This main crystal at 1.2 CM is very large for the specie and especially choice. Chocolate brown and in excellent condition, this has a very attractive arrangement with a cluster of smaller crystals and a tiny matrix. Formerly named Beurgerite, this is not often available and very rarely in such a sharp, textbook form.