{"product_id":"potch-opal","title":"Potch Opal","description":"\u003cp\u003e\u003cspan\u003eOpal is one of geology’s strangest mineral materials: solid stone made from silica and water, but without the orderly crystal structure found in minerals like quartz. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePrecious opal is famous for play-of-color: the shifting rainbow flashes produced when tightly packed silica spheres split light into spectral colors. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCommon opal (also called potch) forms from the same material, but its internal structure is less uniform, so it usually does not produce those blazing rainbow flashes. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe soft glow, waxy surface, and milky translucence of common opal are called \u003c\/span\u003e\u003cspan\u003eopalescence\u003c\/span\u003e\u003cspan\u003e: a pearly optical effect where light scatters inside the stone, giving it a cloudy, glowing, almost suspended look. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOpal forms when silica-rich water seeps into cracks, cavities, volcanic rocks, or sedimentary layers, then gradually dries and hardens. That process can take thousands to millions of years, depending on the conditions. Because it lacks a regular crystal structure, mineralogists often call it a \u003c\/span\u003e\u003cspan\u003emineraloid \u003c\/span\u003e\u003cspan\u003erather than a true mineral. \u003c\/span\u003e\u003c\/p\u003e","brand":"Stemcell Science Shop","offers":[{"title":"Default Title","offer_id":52001944207645,"sku":"PO-5071","price":19.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0059\/0158\/2449\/files\/IMG_7015.jpg?v=1783635410","url":"https:\/\/stemcell.eco\/products\/potch-opal","provider":"Stemcell Science Shop","version":"1.0","type":"link"}