{"product_id":"petrified-wood-freeform-a-natural-madagascar","title":"Petrified wood freeform (A) — natural, Madagascar","description":"\u003cp dir=\"ltr\"\u003eA polished freeform cut from a fossil log, from a tree that was alive in the Triassic and has been stone for over 200 million years.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eNothing about that is figurative. The trunk was buried, and silica-carrying groundwater moved through it and precipitated inside and around the cell walls, replacing organic tissue with quartz and chalcedony while holding the original architecture in place. Growth rings survive. So does grain direction, and knots where branches left the trunk. What you are looking at is the internal structure of a tree, recorded in silica.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe colours come from whatever was dissolved in that water rather than from the wood. Iron oxides give the reds and oranges, manganese the darker tones.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eCut as a freeform rather than sliced flat, so the grain runs over curved surfaces and reads differently depending on where you stand.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMineral:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eSilicified wood, quartz and chalcedony (SiO₂) replacing the original tissue\u003cbr\u003e\u003cstrong\u003eCrystal system:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eTrigonal\u003cbr\u003e\u003cstrong\u003eOrigin:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eAmbilobe area, northern Madagascar                                                                      \u003cstrong\u003eAge:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eTriassic, roughly 200 to 250 million years\u003cbr\u003e\u003cstrong\u003eHardness:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e6.5 to 7 on the Mohs scale; hard and durable, though the polish will dull if it is knocked about\u003cbr\u003e\u003cstrong\u003eTreatment:\u003c\/strong\u003e None\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 12.45 x 9.2 x 20.5 cm\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 3.905 kg\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":58430754259288,"sku":null,"price":235.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/4880\/5720\/files\/pwff-a-1.jpg?v=1788974807","url":"https:\/\/thecrystalshowroom.com\/products\/petrified-wood-freeform-a-natural-madagascar","provider":"The Crystal Showroom","version":"1.0","type":"link"}