Lot # 89 - Petosky Stones, Banded Agate, Tiger Iron and Other Polished Stones

Opening Bid : $ 5.00
Pickup Instructions: jan 25 10am
Start Date/Time: 02-Mar-2026 7:00:00 AM
End Date/Time: 09-Mar-2026 8:28:00 PM
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Description :

The Fossils

Petoskey Stones (fossil coral)

Several of the pieces with the honeycomb pattern are fossil corals from the Devonian period. Each “cell” was once a coral polyp. When polished, they show:

  • Distinct hexagonal chambers

  • A soft gray‑tan palette

  • Radiating internal lines from each center

They’re ancient reef fragments turned into smooth, tactile stones.

The Agate

The stone with the swirling, layered bands is a banded agate. It formed when silica-rich fluids deposited microscopic layers inside a cavity. Hallmarks include:

  • Concentric or fortification-style banding

  • High translucency

  • A glossy polish that brings out the pattern

It adds a nice contrast to the fossil textures.

The Polished Minerals

You’ve also got a few elongated, smooth stones in deeper colors:

  • Dark bluepossibly sodalite or dumortierite

  • Golden browncould be tiger’s eye or a banded jasper

  • Reddishlikely jasper or carnelian

These pieces bring in richer tones and a more “gemmy” feel compared to the fossils and agate.

Why This Collection Works

  • A mix of organic fossilsand inorganic minerals

  • A range of textures: honeycomb, banded, glassy, silky

  • A palette that moves from neutrals to deep jewel tones

  • Varied shapes that keep the eye moving

Disclaimer: All identifications are based solely on visual examination of the photographs provided. I do my best to describe each specimen accurately, but I am not a certified geologist, and some assessments may be incorrect. Buyers should review the images carefully and verify details independently.

Dimensions : 1.5-2.5 in L

Auction History

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