For sale is a small but exquisite group of cobalt spinel on matrix from Vietnam. A fine and well defined group of crystals (for the location, or anywhere for that matter) electric blue cobalt , with cobalt as the coloring agent. Cobalt spinel is the rarest form of spinel, found less than five locations world wide. The lusterous crystals climb from a white contrasting matrix. The crystals have good translucency to transparency, thank goodness, because any more gemmy and they would have gone to the cutters! The size of the top crystal is 10mm!!! These are extremely difficult to obtain in display specimen (check the internet). In a trip to the mines last year we were only able to obtain less than a handful of cobalt spinel pieces. Please note SIZE of specimen.
LOC YEN, YEN BEI, VIETNAM.
20 x 11 x 10mm.