Petrified wood is a fossil where all the organic materials have been replaced with minerals while retaining the original structure of the wood.The petrifaction process occurs underground, when wood becomes buried under sediment and is initially preserved due to a lack of oxygen. Mineral-rich water flowing through the sediment deposits minerals in the plant's cells and a stone mould forms in its place. Elements such as manganese, iron and copper in the water during the petrification process give petrified wood a variety of color ranges.
As a natural fossil, each set of bookends is one-of-a-kind and will vary from the one shown.
Approximately 6.5" by 7.0" by 2.5"
Approximately 3.5 to 5.0 kg.