2 Birds Eye Rhyolite or Orbicular Rhyolite Slabs From Mexico. Thickness on one is about .243" thick or 6.17 MM Thick and the other is about .187" thick or 4.76 MM Thick. Weight of the 2 is about 5 oz. Photographed wet and slabs at an angle to stop some glare so slab in pictures look smaller.
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