Skip to main content
Go to accessibility notice

    Description

    GEM AMMONITE IN MATRIX
    Placenticeras meeki
    Late Cretaceous
    Bearpaw Formation, southern Alberta, Canada

    A dazzling example of these highly sought-after specimens, this extremely bright, colorful Ammonite retains a full covering of the biogenic gemstone Ammolite, flashing with fiery red, orange and green iridescence, and even a couple of small patches of the rare purple coloring. At 9¾ inches in diameter, it is exposed on one side from the 22¼ x 16 inch dark-gray shale matrix, a perfect background to highlight the dramatic aesthetic contrast of the fossil. Over 90% of Ammolite is found only in this locality in southern Alberta. The phenomenal colors were naturally created through the combination of millions of years of compression, and the mineralization of Iron, Copper and Silica which precipitated from volcanic ash. Unlike other gemstones, whose brilliance is caused by light reflected from the surface, the shimmering and ever-changing colors of Ammolite are the result of light refracting through and rebounding from thin platelets of Aragonite, the primary constituent of the Ammonite's shell. A highly aesthetic specimen, it is presented on a custom metal display stand.


    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

    Auction Dates
    May, 2012
    20th Sunday
    Bids + Registered Phone Bidders: 1
    Lot Tracking Activity: N/A
    Page Views: 1,177

    Buyer's Premium per Lot:
    25% on the first $50,000 (minimum $14), plus 20% of any amount between $50,000 and $1,000,000, plus 12% of any amount over $1,000,000 per lot.

    Shipping, Taxes, Terms and Bidding
    This item cannot be shipped using standard methods. Please contact us for more information. Sales Tax information

    Important information concerning Sales Tax and Resale Certificates. Learn More

    Terms and Conditions  |  Bidding Guidelines and Bid Increments |  Glossary of Terms

    Sold on May 20, 2012 for: Sign-in or Join (free & quick)
    Track Item
    Coming soon:

    Jewelry & Timepieces
    Opens about 10/22/2021

    Fine Art
    Opens about 10/19/2021

    Photography
    Opens about 10/20/2021

    US Coins
    Opens about 10/22/2021

    Decorative Art
    Opens about 10/21/2021

    Space
    Opens about 10/25/2021

    Currency
    Opens about 10/18/2021

    Silver
    Opens about 10/26/2021

    Fine Art
    Opens about 10/26/2021

    Fine Art
    Opens about 10/27/2021

    Fine Art
    Opens about 10/27/2021

    Sports Collectibles
    Opens about 10/28/2021

    Comics & Comic Art
    Opens about 10/29/2021

    US Coins
    Opens about 10/18/2021

    US Coins
    Opens about 10/18/2021

    Movie Posters
    Opens about 10/29/2021

    World & Ancient Coins
    Opens about 10/24/2021

    Currency
    Opens about 10/25/2021

    US Coins
    Opens about 10/22/2021

    Fine Art
    Opens about 11/10/2021

    US Coins
    Opens about 11/01/2021

    Ethnographic Art
    Opens about 11/11/2021

    Fine Art
    Opens about 11/12/2021

    Decorative Art
    Opens about 11/12/2021

    Historical
    Opens about 11/15/2021

    Luxury Accessories
    Opens about 11/16/2021

    Entertainment
    Opens about 11/16/2021

    World & Ancient Coins
    Opens about 11/07/2021

    Jewelry & Timepieces
    Opens about 11/05/2021

    Fine Art
    Opens about 11/16/2021

    Nature & Science
    Opens about 11/17/2021

    Photography
    Opens about 11/17/2021

    US Coins
    Opens about 11/08/2021

    Rare Books
    Opens about 11/19/2021

    Decorative Art
    Opens about 11/18/2021

    Comics & Comic Art
    Opens about 11/11/2021

    Comics & Comic Art
    Opens about 11/22/2021

    Jewelry & Timepieces
    Opens about 11/24/2021

    World & Ancient Coins
    Opens about 11/16/2021

    Currency
    Opens about 11/22/2021

    Arms & Armor
    Opens about 11/23/2021

    Decorative Art
    Opens about 11/23/2021

    Fine Art
    Opens about 11/24/2021

    US Coins
    Opens about 11/15/2021

    US Coins
    Opens about 11/15/2021

    Currency
    Opens about 11/18/2021

    Heritage membership

    Join Now - It's Free

    VIEW BENEFITS
    1. Past Auction Values (prices, photos, full descriptions, etc.)
    2. Bid online
    3. Free Collector newsletter
    4. Want List with instant e-mail notifications
    5. Reduced auction commissions when you resell your
      winnings 
    Consign now
    • Cash Advances
    • More Bidders
    • Trusted Experts
    • Over 200,000 Satisfied Consignors Since 1976
    Consign to the 2022 April 21 Photographs Signature® Auction .

    Learn about consigning with us

    I sent out several inquiries, but Moyun is the primary reason I went with Heritage. She is extremely knowledgeable.
    Linda H.,
    Washington, D.C.
    View More Testimonials

    HA.com receives more traffic than any other auction house website. (Source: Similarweb.com)

    Video tutorial

    Getting the most out of search