Good quality fluorescent fluorite from Supernova Pocket, Diana Maria Mine, Frosterley, Werdale County Durham, England. This one has some well terminated crystals with good luster and clarity is some areas ! Color is superb vivid green in artificial light getting bluish in dayliight and super blue under UV light influence !(as on first photo - it was made with additional UV outside) Very nice addition to fine mineral collection or gift for collector !