{"product_id":"native-copper-270","title":"NATIVE COPPER","description":"Centennial mine at Calumet Township in the heart of copper country in Houghton County, Michigan is famous for 'Copper Skulls' - Native Copper casts around\/after long since gone conglomerate pebbles and cobbles. This fine large example is like a baseball glove, only a little heavier! It has a rough, hackly texture, and still contains many smaller rock clasts embedded within it. The Native Copper has a variable tarnish, some bright metallic, other areas much duller, and with some small inclusions of Native Silver. Ex Nick Hawes collection.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781393981775,"sku":"CC48888","price":800.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC48888.jpg?v=1779761255","url":"https:\/\/crystalclassics.co.uk\/products\/native-copper-270","provider":"Crystal Classics UK","version":"1.0","type":"link"}