Petrified wood rounds and limbs and pedestals are selected for tree-like characteristics that were retained as petrification occurred.
Pieces are identified, cut, and polished to emphasize the wood grain, color, cambia, or anomalies -- such as knots -- in the original tree.
Although aesthetics are in the eye of the beholder, valuable petrified limbs and rounds are characterized by:
- Bark-like cambia layer that surrounds the petrified wood and shows interesting features
- A definable center or pith
- The suggestion of growth rings
Additional features, such as gem-filled cavities or quartz fortification further enhance some pieces.