{"product_id":"native-copper-70","title":"NATIVE COPPER","description":"This large cabinet-sized specimen of Native Copper from the famous Calumet \u0026amp; Hecla mine at Calumet Township, Houghton Co., Michigan is full of character. Rather than displaying the much sought after crystals of Native Copper, it presents Native Copper in a ropy appearance, with well defined bleached casts of host rock incorporated within. The Native Copper has a distinctive reddish-orange colour due to partial oxidation to Cuprite and greenish copper carbonate, or Malachite, has begun to form too. Ex David Hardman collection, no. 2105.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781419704655,"sku":"CC49858","price":444.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC49858_b5d7f65e-46c1-443d-a084-9ef75295e97c.jpg?v=1783988592","url":"https:\/\/crystalclassics.co.uk\/products\/native-copper-70","provider":"Crystal Classics UK","version":"1.0","type":"link"}