These fossilized oysters are from the mountains of Peru. From Garfield County, Utah. Petrified wood Tumble polished. Doesn't have the colors of some of the Arizona material, but, this material looks more like wood. On most pieces the wood grain is clearly visible and growth rings can be seen on some pieces.
Material is believed to be sycamore or cypress wood.
We have 1,000s of pieces of this material. Sorry, can't picture them all, but they are not all black and white. Click the thumbnail to see more pictures. Each specimen has an end that is cut and polished, which shows off the grain. This petrified wood from Washington County, Utah, is unusual because it is coated with druzy quartz crystals that sparkle as you turn the piece.