An intriguing uncut nodule that defies easy identification — even to a trained gemmologist. The exterior carries unusual concentric circular markings that are unlike a typical thunderegg surface, with raised spiral patterning around a central point that could suggest fossil inclusions, stylolite formation, or something rarer still. The matrix shows warm pink, mauve and grey tones with iron oxide staining throughout.

Whether this is a thunderegg, a fossil nodule, or something altogether different, it is genuinely one of the more unusual pieces to come through our hands. What's inside remains unknown — uncut and unpolished, it holds its secret completely.

For the collector who appreciates the mystery as much as the stone itself.

This piece is from our private family collection, acquired through Minex — one of Australia's largest mineral businesses, co-founded by Lesley's father.

One of a kind. Sold as pictured.

The Details

• Weight: 189g
• Size: 80 x 60 x 60mm
• Type: Uncut nodule — possibly thunderegg (unconfirmed)
• Special features: Unusual concentric exterior markings, unidentified formation
• Condition: Natural, uncut, unpolished
• Note: Stone identity unconfirmed — listed in good faith as described

Gemstones:

We are happy to combine shipping (automatic on our direct website & by request before paying on eBay)

 Important Information About Our Gems, Minerals & Fossils

 About Our Specimens
All items and gem names are described as accurately as we believe. Please note that many specimens are from our private collection and may be eye-identified rather than gem-tested. While we endeavour to be as honest and accurate as possible, occasional human error may occur in identifying the correct mineral, and we cannot be held accountable for this. We always encourage you to review the images carefully before purchasing.

All photographs are original to the actual item. Any defects or concerns will be clearly noted in the description or shown in the images.

 About Our Fossils

Lesley is a fully qualified Gemmologist and teaches both Gemmology and Esoteric Gemmology. However, she is not an expert in fossils. The fossils in our collection have been professionally assessed and the recommended titles have been used to the best of our knowledge. As such, fossil identifications cannot be guaranteed as fully accurate, and any sale is offered on this basis as general information only.

 About Our Collection
Many of our pieces come directly from our showroom or our private family collection.

Lesley’s father operated Minex — one of the largest mineral businesses in Australia — with factories around the world and an extensive personal collection. He attended all of the major world gem and mineral shows, bringing back only pieces that were truly special. Many of the treasures in our collection come from this beautiful legacy.

 About Our Images
Please enlarge the images to get a better look at individual pieces and quality.
We often include a ruler and/or a hand in the image to give a better sense of size. Your purchase is only for the stone or piece listed and described.
Please note that colours may appear slightly different on various monitors and devices. We endeavour to describe each item as clearly and honestly as possible. If you have any questions, please feel free to ask before purchasing.

 Our 30-Day Returns Policy
Shop with confidence 💛 We accept 30-day returns for: ✔ Any fault not described or shown in the images ✔ Or simply if you decide it isn’t the right piece for you.
We have been in business since 1991 and will always do our best to describe items correctly, treat you with care, and make your experience a positive one.

eBay Customers
We have many items listed in our eBay stores — RenascentCollege / Soul Light Emporium, Renascent-Treasures and RenascentBathBody. Please take a look at our other items. We are happy to combine shipping when requested, at Australia Post rates.