Here is an interesting specimen of what appears to be an opal limb cast from Australia. The opal section on matrix definitely has a petrified wood bark look, suggesting that it’s an opal replaced limb cast. It’s on matrix and looks better wet. Note, many of the pictures are taken when the specimen is wet, it is marked as such. Name: Opalized wood limb cast Locality: Australia. Size: piece measures 45 x 30 x 27 millimeters. Mass: 53 gram including matrix. Age: Miocene Feel free to ask questions! Italy and India, please contact me before purchasing. The item “53 gram possible opalized limb cast fossil on matrix Australia opal wood” is in sale since Wednesday, October 17, 2018. This item is in the category “Collectibles\Rocks, Fossils & Minerals\Fossils\Vegetation\Petrified Wood”. The seller is “devoniandepotllc” and is located in Arlington, Virginia. This item can be shipped worldwide.