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    Description

    DEMANTOID GARNET

    Very Fine Gemstone: Demantoid Garnet - 8.58 Ct.
    Parrot Mine, Tubussis Farm 22, Karibib District, Erongo Region, Namibia

    Demantoid, for those curious about the name, is a variety of Andradite Garnet that possesses an extremely high refractive index (R.I.) and dispersion; so high that it is very similar to Diamond, which was once called "Demant" in archaic German. The original locality was in the Ural Mountains of Russia, but since then, additional localities have been discovered, not many, but some. The area around Tubussis, in central Namibia, is one of the few localities that have produced more than a few scraps of isolated crystals. Unlike the Russian material, crystals from the Tubussis area ranges in color from root beer brown to the blue green tint shown by this round brilliant gem. Of those various shades, the blue-green one is considered to be the most valuable and blue-green stones above 5 carats are very unusual. This one, at 8.58 carats is a rare gem indeed. Being blue-green shows the dispersion color effects very well. It comes with an AGL Cert # CS 65937 that affirms its Namibian origin, as well as the completely natural, untreated character of this very fine gem.
    Measurements: 13.08 x 12.98 x 7.69 mm, 8.58 cts.
    Offered at no reserve.

    Provenance: Rainbow of Africa Collection
    Accompanied by AGL Certificate # CS 65937


    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
    October, 2015
    15th Thursday
    Bids + Registered Phone Bidders: 1
    Lot Tracking Activity: N/A
    Page Views: 2,857

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