Sequoia Petrified Wood Slice 2Ancient sequoia trees fell and were covered in ash or mud allowing minerals to soak through the wood. Instead of rotting it transferred into petrified wood! We only buy from a well respected artist, who cuts and polishes the pieces to a mirror finish. Sequoia petrified wood slice has caramel brown, pale umber and cream. Amazing well defined tree rings are still visible! 6 x 4 x