{"product_id":"bournonite-and-freibergite-on-quartz","title":"BOURNONITE and FREIBERGITE  on QUARTZ","description":"Delightful, intermeshed cogwheels of bright metallic silver-grey Bournonite overgrown with granular gunmetal crystal aggregates of the silver-copper-iron-antimony-arsenic sulphosalt Freibergite sit next to 2 cm tall colourless semi-transparent Quartz crystals.  From the Viboras mine at Machacamarca, Cornelio Saavedra Province, Bolivia, the Bournonite forms characteristic cogwheel crystals to 1.4 cm across by 0.5 cm wide and is a terrific example of this much loved and sought-after habit.  There is a good coverage of both Bournonite and Freibergite on this very showy Bolivian specimen.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781039694159,"sku":"CC19967","price":629.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC19967_2b2f5072-8c0e-4a44-aadf-9431f0bd8c24.jpg?v=1783977654","url":"https:\/\/crystalclassics.co.uk\/products\/bournonite-and-freibergite-on-quartz","provider":"Crystal Classics UK","version":"1.0","type":"link"}