{"product_id":"proustite-10","title":"PROUSTITE","description":"Proustite is one of the most desirable of species for a collector to own. Historically known as ruby, or red silver, this silver arsenic sulphide (also known as a sulphosalt) is both a rarity and a beauty. This magnificent miniature-sized specimen from the historically famous Schlema mining area in Saxony, Germany is a slate-like light coloured matrix with white rhombs of Calcite and possibly Dolomite\/Siderite too, liberally invested with fine ruby red lustrous crystals of Proustite. These measure up to 4 mm and are well-formed and very much intergrown over the specimen. This is an extremely well-balanced display-worthy specimen of this important silver species and retains a superb intense red colour. Ex Professor Werner Paar Collection.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":46545154441391,"sku":"CC18735","price":7500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/8516\/2671\/files\/CC18735.png?v=1770374279","url":"https:\/\/crystalclassics.com\/products\/proustite-10","provider":"Crystal Classics","version":"1.0","type":"link"}