Lapidaryforum.net
Rock Art => Cabochons, Intarsias, Cameos => Topic started by: R.U. Sirius on April 24, 2026, 10:25:08 AM
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Found a small slab of this material in a pile bought at an auction. Classic brown and bluish veil-like patterns certainly look like Biggs or similar materials, but then again this had lots of soft, porous areas. It felt like a rhyolite of some kind while working on it.