{"product_id":"ettringite-4","title":"ETTRINGITE","description":"A group of mustard-caramel-brown Ettringite crystals cover a pinkish-cream porous carbonate matrix from the Wessels mine at Hotazel in Northern Cape Province, South Africa.  The largest crystal measures 4.5 x 0.9 x 0.5 cm and the two main crystals are well terminated.  On examination of the bases of a few crystals, the dark coloured Ettringite is seen to be a 0.5 mm thick rind on what are more glassy, colourless to pale lemon-yellow crystals which form the prism cores.  An interesting specimen and a good example of Ettringite, a hydrous calcium aluminium sulphate.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57780842103119,"sku":"CC13454","price":703.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC13454.png?v=1779743777","url":"https:\/\/crystalclassics.co.uk\/products\/ettringite-4","provider":"Crystal Classics UK","version":"1.0","type":"link"}