{"product_id":"natural-large-agate-geodes-with-crystalline-centres-x-2-from-maintirano-madagascar","title":"Natural Large Agate Geodes with Crystalline Centres x 2 From Maintirano, Madagascar","description":"\u003cp\u003e\u003cstrong\u003e\u003cb\u003eA NOTE FROM NICK \u003cbr\u003e\u003c\/b\u003e\u003c\/strong\u003eA\u003cspan style=\"font-size: 0.875rem;\"\u003e pair of large natural Agate geodes from Maintirano, Madagascar. Both have well defined outer banding in white, grey, yellow and brown tones, with crystalline quartz centres. Their sizes range between 209 mm and 222 mm. Nice big display pieces.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePRODUCT DESCRIPTION \u003cbr\u003e\u003cspan\u003eAgate Geodes from Madagascar \u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003eAgate geodes from Madagascar are nodules of banded Chalcedony that form in volcanic rock. They are sourced from locations including Nosy Varika and Maintirano as well as other areas in the country. They are available in natural form, polished on one side to display the interior, or fully polished. These geodes typically show concentric banding in shades of white, grey, brown, pink, and orange, often with Quartz crystal centres. Madagascar is a primary source, along with Brazil, Uruguay, Mexico, and other volcanic regions worldwide. Agate is a variety of microcrystalline quartz known for its durability, smooth texture, and natural patterns formed by mineral-rich groundwater.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eASSOCIATED MINERALS  \u003cbr\u003e\u003c\/b\u003eAgate, Chalcedony, Quartz\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eASSOCIATED FEATURES\u003c\/b\u003e\u003cbr\u003eTrigonal, Monoclinic, Drusy, Vugs, Cavities\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eASSOCIATED COLOURS\u003c\/b\u003e \u003cbr\u003eBrown, Honey, Orange, Red\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMOHS HARDNESS SCALE\u003ci\u003e\u003cbr\u003e\u003c\/i\u003e\u003c\/b\u003e6.5 – 7\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRODUCT DATA \u003cbr\u003e\u003c\/strong\u003eLocality = Madagascar\u003cbr\u003eGrade = Very Good to A Grade\u003cbr\u003eSize = 209 - 222 mm \u003cbr\u003e\u003c\/p\u003e","brand":"AGATE","offers":[{"title":"Default Title","offer_id":50425172918465,"sku":"186-435-260721BM","price":4788.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2066\/6451\/files\/186435_11.jpg?v=1784817798","url":"https:\/\/www.toprocks.com\/products\/natural-large-agate-geodes-with-crystalline-centres-x-2-from-maintirano-madagascar","provider":"Toprock Gemstones and Minerals ","version":"1.0","type":"link"}