Opalized petrified wood is a form of petrified wood which has developed an opalescent sheen or, more rarely, where the wood has been completely replaced by opal. It is often used as a gemstone. These particular specimen display ample opalization, but still retain the obvious appearance of petrified wood. The opalized sections present as a highly opaque white. Petrified wood itself is a fossil formed when minerals infiltrate cavities between and within cells of natural wood. Usually infiltrated by silica or calcite, the replacement of the organic tissue with the minerals can be so precise that the internal structure as well as the external shape can still be very well-represented. The different minerals can give petrified wood a range of different colors. This specimen is large enough to serve as a paperweight, and makes for a great sample to be passed around in earth science classrooms. Makes a great gift for the mineral collector in your family!
Note: Please be aware that this is a natural mineral and as such each piece is one of a kind! The one you receive may not be exactly the same as the ones pictured but it will be similar. Price is per each piece. They come in irregular shapes, sizes and weights.
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