Bamboo root fossil, also known as Fossil Bambu, is popular
as the slabs make good cabochons and are mined in China.
Fossil bamboo from Indonesia was only found in 2009, and is a
natural agate crystal and makes ideal specimen, and has botryoidal surface
patterns. Theses fossils are hollow and up to 14 million years old. The natural
bamboo was then encrusted with Carbonate Pseudo morphs or barite crystals.
Some can be cut as hollow stones as beads and are beautiful
browns to ivory to pastel orange colours.