{"product_id":"argentite-5","title":"ARGENTITE","description":"A vuggy mass of intergrown, crude, metallic silvery-black Acanthite crystals on a thin granular matrix of sandy-tan quartz.  Acanthite is the low-temperature paramorph of the silver sulphide Argentite; at ambient room temperature, only Acanthite can exist.  By convention, the crude crystals resembling Argentite in this specimen may be more properly named 'Acanthite after the octahedral high-temperature phase Argentite', although this may require a longer label!  This is a great specimen from Schlema in Erzgebirge, Saxony, Germany.  ","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57780364181839,"sku":"CC10137","price":592.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC10137_7d886f84-387c-4bbc-8b81-538158f8a9ff.jpg?v=1783967896","url":"https:\/\/crystalclassics.co.uk\/products\/argentite-5","provider":"Crystal Classics UK","version":"1.0","type":"link"}