This Michigan puddingstone rock specimen has prominent dark red jasper, black chert, translucent quartz, and other colorful clasts embedded in a light quartzite matrix.
Its substantial weight, rough natural surface, and strong color contrast make it an interesting display piece for a geology collection, bookshelf, office, classroom, or Michigan themed home.
Details
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Item: Natural puddingstone rock specimen
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Rock Type: Jasper conglomerate commonly called Michigan or Great Lakes puddingstone
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Materials: Quartzite matrix with visible red jasper, black chert, translucent quartz, and additional mineral clasts
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Color: Light cream and pale greenish gray with dark red, burgundy, black, gray, white, and translucent inclusions
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Maker/Mark: No visible maker's mark
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Origin: Collecting location not confirmedÂ
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Style: Natural history, Michigan geology, and organic shelf decor
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Special Features: Unpolished surface, rounded irregular form, visible multicolor clasts, and substantial weight
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Size: Approximately 4 inches tall by 5 inches long by 3 inches wide
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Weight: Approximately 3 pounds 2 ounces
Condition Grade: Very Good
Positives
- The specimen is solid and substantial with strong natural color variation.
- Dark red jasper and additional contrasting mineral clasts are visible across several sides.
- The irregular rounded form offers more than one attractive display angle.
- The rock remains unpolished, leaving its natural surface and geological character intact.
Issues / Wear
- The specimen has natural pits, rough areas, small cavities, surface irregularities, and uneven edges.
- Loose grains or tiny surface particles may be present because the rock is unpolished.
- The exact collecting location and geological provenance are not confirmed.
See all photos for detail. Sold as pictured.
Condition Grade Key
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Near Fine: Almost perfect. Very minor signs of age only.
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Very Good: Shows light use. Sound and attractive with minor flaws.
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Good: Complete and intact. Noticeable wear consistent with age and use.
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Fair: Shows significant wear. Readable or usable but clearly used.
Collector's Notes
Puddingstone is a jasper conglomerate known for colorful rounded pebbles set into a contrasting quartzite matrix.
This specimen suits a Michigan rock collector, geology classroom, Great Lakes display, or buyer who simply likes natural color and texture.
The scattered burgundy jasper, black chert, and translucent quartz make every side a little different.
It is still a rock, but it
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Disclaimer
All items are vintage and may show signs of age, wear, or use consistent with their history. Photos show the exact condition of each piece—please review them carefully, as they are part of the description.Â
While I do my best to capture colors accurately, your monitor or device screen may display colors slightly differently from the actual item.
Please Note:
These pieces come from estate collections and have been surface cleaned. You may wish to perform additional cleaning depending on your preference.