{"product_id":"cassiterite-11","title":"CASSITERITE","description":"The mining district around Kr'sno in the Horn' Slavkov district of the Czech republic was a tin-tungsten deposit which can boast over 130 mineral species and is type locality to five.  This is one of commoner but most important species, Cassiterite and what a specimen it is.  Ex. matrix, a tight cluster of jet-black Cassiterite crystals with a superb, bright metallic lustre form a small but showy miniature.  Examination reveals several twinned crystals, with all crystals having smooth and gently undulating surfaces yet razor-sharp edges.  The largest crystal extends over the full width of the specimen at a rather massive and delicious 4.0 cm.  A really fabulous crystallised Cassiterite from Kr'sno.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781034582351,"sku":"CC19815","price":666.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC19815_a78c0895-49b5-4a9f-9ef8-12a3f13b2dff.jpg?v=1783977180","url":"https:\/\/crystalclassics.co.uk\/products\/cassiterite-11","provider":"Crystal Classics UK","version":"1.0","type":"link"}