🔥 Hot ▲ 50 r/RockTumblingRotary tumbled Cantera Opal: Fire Opal and a few othersu/WonderfulRockPeace1 — 20 hours ago
🔥 Hot ▲ 443 r/MineralPornPetrified wood from the Triassic Period (wood replaced with chalcedony ~210 million year old from the Chinle formation)u/WonderfulRockPeace1 — 5 days ago