Late Tertiary Epoch, 20 million years B.P. A very large freestanding polished fossil wood branch, showing stunning colouration of pale cream with dark brown layering, as well as clear internal structure. 5.4 kg, 40 cm high (15 3/4 in.). From Indonesia. Private Shropshire, UK collection. Indonesian petrified wood was formed over 25 million years ago when a tropical rain forest in Indonesia was covered in a thick volcanic ash thus burying the trees. Over time the wood fossilised and turned into fossil stone. It is classified as a semi-precious gemstone. [No Reserve]