Bog agate, McDermitt Oregon, consists of pieces of wood and plant material that fell into a bog and were compressed and then petrified by silica. This material comes from McDermitt, Oregon.Uncommon and rarely offered! It parcel consists of mostly brown & cream color swirling bands.Sometimes Bog agate will have red, orange, green and yellow colors. Some of the original wood grain is preserved.See images above for random examples.This bag weighs 8 oz. and will contain an average of 7-10 nice sized pieces. Great refill for any beginner-novice tumblers, i.e., NSI, National Geographic, Dr. Cool, Smithsonian, Elenco & Pro Models Lortone, Chicago & Others. NOTE* This Bag DOES Not contain Grits, Findings, jewelry parts,or adhesives that may have been included with the original tumbler accessories. WARNING-Choking Hazard! Use Tumbling instructions from the tumbler manufacturer.WARNING-CHOKING HAZARD!