{"product_id":"polybasite-2","title":"POLYBASITE","description":"This small cabinet specimen has two important qualities which make it something rather special.  Number one it is from Clara mine, one of the world's most remarkable mineral localities and a firm favourite amongst collectors.  Second, not only is it the relatively rare silver-copper-antimony-arsenic sulphosalt Polybasite but forming Polybasite crystals you can actually recognise opposed to a more typical grey granular mass!  The Polybasite forms very well defined pseudo-hexagonal crystals across an area of approximately 10 x 8 mm, each of a bluish steely silver with a bright metallic lustre.  The crystal faces are covered with a geometric pattern of concentric growth lines which mimic the overall crystal symmetry.  These nestle amongst tiny milky Quartz crystals on top of a block of massive grey, cream and rusty Quartz matrix.  The Clara mine is located in the Rankach Valley near to Oberwolfach, in Germany's Black Forest.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781214970191,"sku":"CC28425","price":444.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC28425_151cea3e-00c8-46e8-b27b-faa4167f1279.jpg?v=1783981980","url":"https:\/\/crystalclassics.co.uk\/products\/polybasite-2","provider":"Crystal Classics UK","version":"1.0","type":"link"}