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Description

Ammolite Fossil
Placenticeras sp.
Cretaceous
Bearpaw Formation
Alberta, Canada
4.37 x 3.52 x 0.91 inches (11.09 x 8.95 x 2.30 cm)

Bright flashes of orange, green, and violet shimmer across this polished slab of Ammolite, revealing the vibrant remnants of an ancient marine Ammonite shell. Cut from material discovered in the Bearpaw Formation of Alberta, Canada, this rare gemstone fossil is prized for its extraordinary iridescence and vivid coloration. Natural fracture lines traverse the surface, forming an intricate mosaic that adds depth and visual texture without detracting from the bold play of color. The piece has been expertly shaped and finished to emphasize its most dynamic features, while retaining the layered character of the original shell structure.


Estimate: $400 - up.

Condition Report*: Condition report available upon request.
*Heritage Auctions strives to provide as much information as possible but encourages in-person inspection by bidders. Statements regarding the condition of objects are only for general guidance and should not be relied upon as complete statements of fact, and do not constitute a representation, warranty or assumption of liability by Heritage. Some condition issues may not be noted in the condition report but are apparent in the provided photos which are considered part of the condition report. Please note that we do not de-frame lots estimated at $1,000 or less and may not be able to provide additional details for lots valued under $500. Heritage does not guarantee the condition of frames and shall not be liable for any damage/scratches to frames, glass/acrylic coverings, original boxes, display accessories, or art that has slipped in frames. All lots are sold "AS IS" under the Terms & Conditions of Auction.

Auction Info

Proxy Bidding Ends 
October
23rd Thursday 7:50 pm CT
Auction Dates
October
23rd Thursday
Proxy Bidding Time Remaining 
1 Day 20h 9m 1s
Internet/Mail Bids: 3
Lot Tracking Activity: 9
Page Views: 58

Buyer's Premium per Lot:
25% of the successful bid (minimum $49) per lot.

This lot is in: 1 - Nature & Science Session
(Lots 79001-79051) - 8:00 PM Central Time, Thursday, October 23, 2025.
[Proxy bidding ends ten minutes prior to the session start time. Live Proxy bidding on Heritage Live now starts within 2 hours of when the auction opens for proxy bidding and continues through the live session.]

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