A good Derbyshire Ashford black marble and 'twelve vein' blue john fluorspar inlaid obelisk probably early 20th century with early blue john specimen panels of tapering square form, the front inlaid with panels of blue john, on stepped square base, 52cm high overall This lot is subject to the following lot symbols: TP TP Lot will be moved to an offsite storage location (Cadogan Tate, Auction House Services, 241 Acton Lane, London NW10 7NP, UK) and will only be available for collection from this location at the date stated in the catalogue. Please note transfer and storage charges will apply to any lots not collected after 14 calendar days from the auction date.