{"product_id":"amethyst-flower-g-natural-brazil","title":"Amethyst flower (G) — natural, Brazil","description":"\u003cp dir=\"ltr\"\u003eMostly green with purple coming through and some flower formation across the surface.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eWith this much celadonite showing, it is worth saying where the cavity itself came from. Around 130 million years ago, as South America and Africa began separating, enormous volumes of lava erupted across what is now southern Brazil and set into basalt hundreds of metres thick. Gas trapped in those flows left cavities behind. Every amethyst geode from Rio Grande do Sul sits inside one of them.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eCeladonite formed first, lining the empty space as the basalt weathered. Silica-bearing water came later and built quartz on top of it. The green underneath is older than the purple.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\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\"\u003e\u003cstrong\u003eMineral:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eAmethyst, the purple variety of quartz (SiO₂), with celadonite\u003cbr\u003e\u003cstrong\u003eCrystal system:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eTrigonal\u003cbr\u003e\u003cstrong\u003eOrigin: \u003c\/strong\u003eRio Grande do Sul, Brazil\u003cbr\u003e\u003cstrong\u003eHardness: \u003c\/strong\u003e7 on the Mohs scale; hard, though fine druzy points chip easily\u003cbr\u003e\u003cstrong\u003eTreatment: \u003c\/strong\u003eNone\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 15.5 x 10.2 x 32 cm\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.81 kg                                                                                                                                            \u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eSupplied on a bespoke gold stand\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":58546285183320,"sku":null,"price":236.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/4880\/5720\/files\/afb-b-1.jpg?v=1790154448","url":"https:\/\/thecrystalshowroom.com\/products\/amethyst-flower-g-natural-brazil","provider":"The Crystal Showroom","version":"1.0","type":"link"}