{"product_id":"polished-dendritic-green-yellow-opal-palm-stones-x-12-from-betroka-madagascar","title":"Polished Dendritic Green Yellow Opal Palm Stones x 12 From Betroka, Madagascar","description":"\u003cp\u003e\u003cstrong\u003eA NOTE FROM NICK\u003c\/strong\u003e\u003cbr\u003eA large flat of 12 large individually polished Dendritic Green Yellow Opal palm stones or galets. These have dendritic black Psilomelane Manganese patterns in them with a mixture of white, green and yellow, often with translucent matrix in between. This material comes from the Betroka region in Madagascar.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRODUCT DESCRIPTION\u003c\/strong\u003e\u003cbr\u003eGreen Opal is a common Opal, a hydrated form of silica, coloured by nickel-bearing clay minerals such as Nontronite. It ranges from lime green to olive and golden yellow, often with brown and orange veins and a crackled pattern, has a waxy to glassy lustre and takes a smooth polish. It has a Mohs hardness of 5.5 to 6.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRODUCT DATA\u003c\/strong\u003e\u003cbr\u003eLocality = Betroka, Madagascar\u003cbr\u003eGrade = Good to Very Good Grade\u003cbr\u003eSize = 61 - 71 mm\u003c\/p\u003e","brand":"OPAL - Green","offers":[{"title":"Default Title","offer_id":50880107774145,"sku":"190-079-261102BM","price":1960.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2066\/6451\/files\/190079_2.jpg?v=1793972063","url":"https:\/\/www.toprocks.com\/products\/polished-dendritic-green-yellow-opal-palm-stones-x-12-from-betroka-madagascar","provider":"Toprock Gemstones and Minerals ","version":"1.0","type":"link"}