Or it can be a complete cast of the original piece of wood, with no detail of cellular structures at all. There are many sites where the petrified wood will also have or be agate/chalidone (the 2 terms are considered synonyms, and are mostly regional in use.) the preservation can be very good, showing the minutest details of cellular structures.
Heavy duty hinges for wooden gates
The woods at bear creek
Black wood spindle bed
Agatized petrified wood Indonesia Rocks and minerals, Geology
