Arizona Araucaria petrified fossil wood1 of 4 images

Arizona Araucaria petrified fossil wood

6 300 €


The Araucaria, a marvellous petrified wood from America. When this fossil tree was discovered in Arizona desert, it was difficult to explain the windings on the raw part of the trunk. The tree seemed healthy, complete, with shades of gray, without exuberance, a calm tree. It was only once sawn that it was possible to identify that the curved interlacing was the drawing of five hearts, which, to our knowledge, was never seen for an Arizona araucaria. Loggers told us that they had encountered such trees, softwoods, which, for them, had suffered a landslide. The head of the tree had probably been cut but still allowed five shoots to emerge. The part where all the hearts are visible is probably at the bottom of the tree. Higher up, eighty centimetres farther there are only three interlaced hearts. The trunk is surrounded by black. This may be the colour of plant decomposition, or more likely iron oxide reduction (away from the air). There are many black shapes, a little less brilliant, which have an extremely precise detail of the shape of the wood cells (with a magnifying glass). These can be silicified parts that are at the origin of the process, in the first few decades of the wood-tree's burial (permineralization?). Many geodes of white quartz, others slightly amethyst, agates punctuate the surface of the cup, milky quartz in shades of blue and pink make the colours more delicate on this dark background. It is a difficult tree to work on because of its hardness, but the polishing gloss is the counterpart. The harder a stone is, the more it shines when polished. This probably Mesozoic piece is a cut from an old fossil Araucaria, a marvellous petrified wood, with a back reinforced with fiberglass.


  • Time:Mesozoic
  • Origin:USA
  • Material or technique:Wood
  • Sizes:80 x 98 x 2.5 cm (Width x Length x Height)
  • Reference:2750

Conservation status

Really good condition

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