{"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":46543057387695,"sku":"CC13454","price":950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/8516\/2671\/files\/CC13454.png?v=1770305626","url":"https:\/\/crystalclassics.com\/products\/ettringite-4","provider":"Crystal Classics","version":"1.0","type":"link"}