This is an extremely rare, richly covered matrix specimen of twinned cubanites to 1 cm on contrasting calcite matrix. The locality is long since closed and unreachable for colelctors. These ARE the world's best cubanites, and specimens are simply almost impossible to come by now, except for scattered supplies of loose thumbnail crystals. This is one of the best matrix examples I have seen for sale, certainly. It is quite bright and aesthetic, and MUCH BETTER In PERSON! 5.5 x 3.3 x 1 cm