{"product_id":"proustite-5","title":"PROUSTITE","description":"This superb thumbnail of crystallized Proustite from the Schlema-Hartenstein District of Erzgebirgskreis in Saxony, Germany is in incredible condition. Proustite, a silver-arsenic sulphosalt, is often tarnished to opaque black, but this specimen, which has been carefully preserved, retains its natural bright blood-red colour. The Proustite crystals are attached to an almost unnoticeable granular Quartz matrix and forms divergent bladed crystals, some forming a semi-reticulated pattern. These crystals have some rough faces at their terminations, but these are entirely natural and not damaged, or fractured surfaces. When back-lit, the specimen is brilliant scarlet. A small, but elite-quality Proustite from Saxony. Formerly mounted to an acryllic display cube, this specimen is now stored loose.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781035696463,"sku":"CC19836","price":1850.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC19836_097244cb-16e1-4e76-aee9-06aa3e9f94b4.jpg?v=1783977201","url":"https:\/\/crystalclassics.co.uk\/products\/proustite-5","provider":"Crystal Classics UK","version":"1.0","type":"link"}