This is one of the most rare and strange of old USA mineral species, not found since the early 1900s here, and almost legendary among collectors of such old and esoteric minerals. This is a beautiful and important display specimen that has an INCREDIBLY RARE cluster of bright orange Wakabayashilite on a showy, display-sized specimen of contrasting massive calcite! A piece such as this dates back over 150 years and is so rare that I have only seen 2 other genuine old pieces like this in my life, for sale. The last time I saw one was ten years ago and in the collection of Andrew Carnegie (the industrial magnate). It was not recognized at the time as a new species and was always labeled as "hair orpiment." This is a significant rarity in museum quality. I am sure that the cluster has been stabilized with a glue, a long time ago, as it is not as wiggly and fragile as it looks, and can be touched.