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.
Woods and water realty chippewa falls
Rate my professor cody wood
Mainstays wood and metal desk
Petrified Agatized Wood Limb Casting From Cut & Polished Wyoming