Large Amethyst Cathedral Geode
Updated September 1, 2026
| Lot number | 0029 |
| Estimate | $900 - $1,200 |
| Opening bid | $400 |
| Auction | Fall Rock and Fossil Timed Clearance Auction |
| Date | September 19, 2026 at 1:00 PM EDT |
| Auction house | Fossils & Gemstones of Houston |
| Location | Houston, Texas |
Large amethyst geode with fluorescent calcite crystals from Brazil. 19.5” x 13” x 10”. 45.5 lbs.
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