{"product_id":"ettringite-5","title":"ETTRINGITE","description":"Ettringite is a rare calcium-aluminium sulphate and is one of the iconic minerals from the N'Chwaning Mines in the Kuruman Kalahari Manganese Field of South Africa.  This is a magnificent ex-matrix crystal forming a hexagonal prism with a six-sided pyramidal termination and central pinacoidal apex.  The Ettringite is a translucent, uniform brilliant acidic lemon-yellow, with a semi-transparent near-surface layer within which there is a fabulous satin lustre.  One side of the prism has grown against another crystal and hence has not had space to perfectly develop across three faces, forming a depressed phantom profile across these prism faces.  This is not damage, simply the Ettringite crystal accommodating the available development space.  A beautiful specimen and an exceedingly rare example of such perfect colour and display habit and, of course, its enormous size.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":46545288724655,"sku":"CC20814","price":7500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/8516\/2671\/files\/CC20814.png?v=1770378248","url":"https:\/\/crystalclassics.com\/products\/ettringite-5","provider":"Crystal Classics","version":"1.0","type":"link"}