Zarembo Island, Alaska
    Sar-e-Sang Mine, Koksha River Valley, Badakhshan Province, Afghanistan

    There are three main types of ultraviolet rays currently and frequently used by modern collectors of fluorescent minerals. These types are based on wave length: shortwave, longwave, and mid-range UV. The shortwaves are the most frequently used, as they produce by far the largest amount of fluorescent responses, as well as, in general, the most vibrant reactions. Longwaves produce the second largest volume of responses, and mid-range the smallest, although whilst the first two have been utilized for decades, mid-range has only been in use since the 1990s and its potentialities are perhaps yet to be fully realized. This Lot comprises two specimens, which fluoresce brightly under longwave UV. The first is a 3½ x 3¼ x 2-inch (8.9 x 8.3 x 5.1 cm) specimen with good coverage of cubo-octahedral Fluorite crystals, a lovely soft and translucent pale green under daylight. Under the longwave UV, however, they exude a brilliant violet-tinged blue glow (with a similar, but less intense response under shortwave). This reaction is a little-seen exception to the general output of specimens from the obscure locality of Zarembo Island in Alaska, most of which display little to no fluorescence at all. The second specimen comes from what is regarded as possibly the oldest continuously-worked mine in the world, the Sar-e-Sang mine in the rugged, mountainous Koksha River Valley of Afghanistan, which has been worked for its precious Lapis Lazuli for over 6,000 years. This specimen is not of the fabled and precious blue Lapis, however, but a rare and far more interesting crystal specimen of the closely related mineral Sodalite, in its fluorescent and tenebrescent variety: Hackmanite. This variety not only fluoresces a bright pastel orange to yellow-orange, best under longwave UV, but it also shows reverse photosensitivity, or tenebrescence, under shortwave, wherein the off-white daylight color is changed to a light violet color when exposed to daylight; it slowly returns to normal when left in the dark, but reverts more rapidly under white light and, remarkably, the process is endlessly reversible. 4¼ x 2½ x 2 inches (10.8 x 6.4 x 5.1 cm) overall, with a sawn-off side and back faces, the largest of the several dodecahedral Hackmanite crystals is almost 1½ inches across, a very large example of this type of crystal known from only a few localities worldwide. Offered at no reserve.

    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. 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. All lots are sold "AS IS" under the Terms & Conditions of Auction.

    Fees, Shipping, and Handling Description: Requires 3rd Party Shipping (view shipping information)

    Sales Tax information  |  Terms and Conditions

    Bidding Guidelines and Bid Increments

    Glossary of Terms

    Auction Info

    Auction Dates
    May, 2012
    20th Sunday
    Bids + Registered Phone Bidders: 9
    Lot Tracking Activity: N/A
    Page Views: 1,638

    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.

    Sold for: Sign-in or Join (free & quick)

    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 2018 April 25 Silver & Vertu - Dallas.

    Learn about consigning with us

    The picture of each piece, the brief description, incoming bids, what paintings were coming up next in the queue and, of course, the auctioneer; all perfectly organized and presented! Your service was great.
    Ray Holland,
    Chester Gap, VA
    View More Testimonials receives more traffic than any other auction house website. (Source:

    Video tutorial

    Getting the most out of search

    Recent auctions

    2017 October 13 Illustration Art Signature Auction - Dallas
    2017 October 13 Illustration Art Signature Auction - Dallas
    REALIZED $1,098,328