This is a beautifully colored, 6.5" petrified wood limb section from Texas Spring Canyon, Nevada. One side has been polished to a mirror finish to highlight the patterns in the specimen. This slab has a number of stabilized cracks on the reverse side. None of them appear to have broken free of the piece. Comes with an acrylic stand.
This comes out out of an old collection of petrified wood we recently purchased that includes a lot of pieces from unusual and/or no longer accessible locations. Keep an eye out for more rare pieces coming in the future.
Petrified wood is the name given to wood that has been turned into stone (fossilized) through the process of permineralization. All of the organic matter becomes replaced by minerals, while much of the original structure such as tree rings in retained. For this to happen the wood needs to be buried in an environment both low in oxygen (preventing decomposition) and with flowing, mineral-laden water. The coloration is due to the various minerals that are present during fossilization. For example red colors are due to iron compounds, greens due to copper, etc.