Natural History Group - Banded Agate, Petrified Wood & Plant Fossil
Updated August 6, 2026
| Lot number | 0150 |
| Estimate | $200 - $300 |
| Opening bid | $75 |
| Auction | Summer Marketplace | Ancient & Ethnographic |
| Date | August 13, 2026 at 11:00 AM EDT |
| Auction house | Artemis Fine Arts |
| Location | Louisville, Colorado |
North America, ca. 1,000,000,000 BCE. A group of three natural specimens. The first is a banded agate (chalcedony) nodule retaining its rough natural exterior on one face, with the opposite face cut
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