Fluorite (botryoidal) (ex Kay Robertson Collection)

Item Description

A really unusual Fluorite specimen (for Colorado) showing a frosty nearly white color on the surface, and a much more concentrated purple hue underneath. The botryoidal form, along with the attractive color make for an enticing combo for any Fluorite collector, especially a Colorado Fluorite collector. This piece was collected by Don Knowles in 1983. Good quality all around, save the edges where it was removed from the pocket. Ex Kay Robertson Collection (#9646). Kay was a prominent California collector, who specialized in European classics. She nearly lived 100 years from April 1920 - March 2020. See the article in the March-April, 2007 Mineralogical Record ( https://www.mineralogicalrecord.com/pdfs/Kay%20Robertson%20Collection.pdf ), and the 50+ page article in the German Magazine "Mineralien Welt" November-December 2017.