Triassic. Petrified wood is often used in lapidary work. It is cut into shapes for making jewelry, sawn into blocks to make bookends, sawn into thick slabs to make table tops, and sawn into thin slabs for clock faces, cut into cabochons, used to make tumbled stones and many other crafts. Small pieces of petrified wood can be placed in a rock tumbler to make tumbled stones.
UT Department of Environmental Sciences
The University of Toledo
Digital Initiatives, University of Toledo Libraries
environmental sciences; virtual exhibitions
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