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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
Size: 7 mm
agate often is found as a round nodule
but slicing them in half and polishing them may reveal intricate patterns and colors
opal cutters need to leave the ironstone on the back of the opal to form a full sized stone
Thunder egg 10-15mm oval flat beads (ETB01139) Pinolith Size: 7 mmThunderegg A thunderegg (or thunder egg) is a nodule like geological structure, similar to a geode, that is formed within a rhyolitic lava flow. Thundereggs are rough spheres, most about the size of a baseballthough they can range from less than an inch to over a meter across. They usually contain centres of chalcedony in the form of agate, jasper or opal,[1] either uniquely or in combination. Also frequently encountered are quartz and selenite
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