Skip to main content
Go to accessibility notice


    Andamooka, South Australia
    This incredible stone is from one of the smallest but most beautiful opal deposits in the world, easily rivaling the other more abundant Australian opal fields at Lightening Ridge and Cooper Pedy; indeed, on the occasion of Queen Elizabeth II's first visit to Australia in 1954, it was an Andamooka Opal that was chosen to be presented to her to commemorate the auspicious occasion. The deposits were first discovered in the late 1920's by two prospectors taking refuge from a thunderstorm. Formed in the thin veins of quartzite rock, it emerges from the ground with a rather dull, washed-out appearance. A simple treatment with acid, water and heat, however, reveals the full natural beauty, incredibly presented here: the surfaces of this trapezoidal freeform glitter all over with tiny fiery points of electric color, separated with remarkable clarity into two distinct layers, one side predominantly red-orange and the other a deep vivid green interspersed with areas of matrix. Brought to a high polished finish with a thin resin coating, it is a spectacular example of one of the most beautiful stones in the world, measuring approximately 6 7/8 x 3 x 1½ inches and weighing 3000 carats.

    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
    June, 2011
    12th Sunday
    Bids + Registered Phone Bidders: 6
    Lot Tracking Activity: N/A
    Page Views: 2,195

    Buyer's Premium per Lot:
    19.5% of the successful bid (minimum $14) 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 Jun 12, 2011 for: Sign-in or Join (free & quick)
    Track Item

    Heritage membership

    Join Now - It's Free

    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
    Consign now
    • Cash Advances
    • More Bidders
    • Trusted Experts
    • Over 200,000 Satisfied Consignors Since 1976
    Only 36 days left to consign to the 2021 November 5 American Art Signature Auction!

    Learn about consigning with us

    Ms. Sullivan proved knowledgeable, diligent and efficient in selecting items viable for the American Indian & Pre-Columbian Art Auction
    Margie Royle,
    Lakewood, NJ
    View More Testimonials receives more traffic than any other auction house website. (Source:

    Video tutorial

    Getting the most out of search