{"product_id":"amethyst-cathedral-c-natural-brazil","title":"Amethyst cathedral (C) — natural, Brazil","description":"\u003cp dir=\"ltr\"\u003eA purple line running through the quartz, with amethyst druzy through the centre.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003ePurple in quartz needs iron present while the crystal is growing. A distinct line of it means the iron came and went: present for that interval, absent either side of it, then back again by the time the central druzy formed. The clear quartz between is the gap.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe back and base are cemented and the outside painted dark, standard for cut geodes. The crystal itself is untouched.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMineral:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eAmethyst, the purple variety of quartz (SiO₂)\u003cbr\u003e\u003cstrong\u003eCrystal system:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eTrigonal\u003cbr\u003e\u003cstrong\u003eOrigin:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eBrazil\u003cbr\u003e\u003cstrong\u003eHardness:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e7 on the Mohs scale; hard, though individual crystal tips chip easily\u003cbr\u003e\u003cstrong\u003eTreatment:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eNone to the amethyst. Backing, base and exterior are cemented and painted, standard practice for cut geodes\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 11 x 19 x 34.5 cm\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 10.65 kg                                                                                                                                        \u003cstrong\u003eNote:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eKeep it out of direct sunlight. Sustained UV breaks down the iron centres that produce the purple, and amethyst that fades does not come back\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eYou will receive the exact piece photographed.\u003c\/p\u003e","brand":"The Crystal Showroom","offers":[{"title":"Default Title","offer_id":58645027651928,"sku":null,"price":350.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/4880\/5720\/files\/acb-c-1_b020926c-eaf2-4050-8c58-b6648d4df908.jpg?v=1791138601","url":"https:\/\/thecrystalshowroom.com\/products\/amethyst-cathedral-c-natural-brazil","provider":"The Crystal Showroom","version":"1.0","type":"link"}