{"product_id":"proustite-on-calcite-2","title":"PROUSTITE on CALCITE","description":"Specimens of larger, visible Proustite, are extremely rare from Měděnec (Kupferberg) in the Krušné Hory Mts, Ústí Region, Bohemia, Czechia. This small cabinet-sized specimen is a cracker, featuring a line of at least 11 composite Proustite crystals along the surface of a bed of bladed, grey, Pyrite-included Calcite crystals on top of a thicker (1.5 to 2.5 cm) layer of massive grey to pinkish Calcite with inclusions of Proustite and Pyrite. The Proustite crystals, which reach up to 7 mm in length, are seed-like in shape, but composed of many stepped, or aligned crystals. They are opaque and deep purple-red in colour with a dull resinous surface lustre. A very distinctive piece, with a very unusual crystal habit of Proustite. Ex Martin Bohaty Collection.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781170929999,"sku":"CC25094","price":2961.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC25094.jpg?v=1783980033","url":"https:\/\/crystalclassics.co.uk\/products\/proustite-on-calcite-2","provider":"Crystal Classics UK","version":"1.0","type":"link"}