Large hollow chalcedony nodule Coprolite The growth changes near the

The growth changes near the tip and the orange chalcedony shows through better

smoky quartz

Some opaque whitish layers form agate banding of white and translucent chalcedony

they appear to be some sort of encrustation pseudomorph as broken tips show they are hollow inside

Large hollow chalcedony nodule Coprolite The growth changes near theLocale: Morocco Approx size: 2 x 2 x 2" Approx weight: 232g Sometimes called "panda," truffle, womb stone, or witches wart chalcedony (hey, you dont even want to know what I was calling them), these nodules have slightly obscene looking bulbous, knobby forms in contrasting white and dark brown gray semi translucent chalcedony. The nodules are actually believed to be a fossil pseudomorph of prehistoric sponge colonies dating back to the Upper