Skip to main content
Go to accessibility options


    430' Level, Sterling Hill Mine, Ogdensburg, Sussex Co, New Jersey
    While Willemite is an abundant ore mineral in the Franklin area mines, sizable Willemite crystals are extremely rare. Most of the crystals that are found tend to have a rounded or corroded appearance, making this 1½-inch (3.8 cm) crystal, with razor-sharp edges, an outstanding rarity. Although at first glance it appears to be a single reddish-brown crystal, it is actually a step-growth group of crystals; one of the major hexagonal prism faces shows some 'hopper' growth along with a couple of its corners. The dominant feature of the crystal however, is its extreme sharpness. Securely emplaced in the center of the white Calcite pocket, along with some blebs of black Franklinite and red-brown Willemite, it is an intriguing enough piece under normal light. Its real value is revealed under shortwave ultraviolet light: all of the Willemite fluoresces a brilliant green color, including several spidery veins coursing through the Calcite; while the Calcite fluoresces a blazing orange-red, dramatically speckled with black patches of Franklinite. The Willemite crystal retains its sharpness even under ultraviolet, and makes this a first-class, museum-standard specimen. 4¼ x 3½ x 2½ inches (10.8 x 8.9 x 6.4 cm).

    Provenance: ex. Hugh Ronemus Collection

    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: 5
    Lot Tracking Activity: N/A
    Page Views: 1,797

    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

    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
    Consign to the 2022 March 17 Urban Art Signature® Auction .

    Learn about consigning with us

    I was very pleased with the results and with the professionalism of Alissa and Heritage Auctions! I will definitely auction with them again.
    Phyllis R.,
    Laramie, WY
    View More Testimonials receives more traffic than any other auction house website. (Source:

    Video tutorial

    Getting the most out of search