Large hollow chalcedony nodule Spider jasper making this a dramatic Halloween

making this a dramatic Halloween mineral specimen

UV REACTIVITY microcline feldspar can have slight red fluorescence which was present in many of these specimens

composed of interlocking calcite crystals

This specimen has a nice cluster of three cleaved points near the center

Thin dark iron bands create several layers of hills filled with saturated layering

Large hollow chalcedony nodule Spider jasper making this a dramatic HalloweenLocale: 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