I think that is enough cavity volume to qualify it as a Thunderegg! I had a similar one, but the husk was chalcedony, but I guess they're all cryptocrystalline quartz - AWESOME find!
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I think that is enough cavity volume to qualify it as a Thunderegg! I had a similar one, but the husk was chalcedony, but I guess they're all cryptocrystalline quartz - AWESOME find!
Thank you! Agates just amaze me. Natures art.