{"product_id":"fluorite-with-calcite-10","title":"FLUORITE with CALCITE","description":"Blackdene mine, close to the village of Ireshopeburn in County Durham, is one of Weardale's most famous mines because of its world-class purple Fluorite specimens.  The mine is known to have been worked during the 1400s and only stopped operating in 1987.  This delightful small cabinet specimen consists of a matrix plate completely covered with lustrous and glassy, sharp cubic lilac-purple Fluorite crystals up to 2.5 cm on edge, but more typically averaging about 1 cm.  Occasional milky-white Calcite crystals accompany the Fluorite.  The Fluorite shows good daylight fluorescence; is bright blue-white with pale pink Calcite in LWUV and dull blue-white in SWUV. A great Fluorite from Blackdene mine.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57780867957071,"sku":"CC13999","price":1850.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC13999_1b63944c-ec4d-4109-9bf6-88d3bb95ed88.jpg?v=1783970588","url":"https:\/\/crystalclassics.co.uk\/products\/fluorite-with-calcite-10","provider":"Crystal Classics UK","version":"1.0","type":"link"}