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    Very Rare Gemstone: Mangano-Tantalite - 9.44 Ct.
    Muiâne Pegmatite, Alto Ligonha District, Zambezia Province, Mozambique

    Mangano-Tantalite is very rarely low enough in Iron to be transparent, but this is an exception: a blood red, rectangular cushion style gem of exceptional size and eye clean clarity. The brilliant luster of the stone is due to its very high Refractive Index (R.I.) The Tantalum contained in this gem is an essential component of modern electronics and industrial process equipment. In many areas of technology, there are no substitutes for it. Mozambique is one of the non-conflict producers of this rare metal and the Muiâne Mine is home to the incredibly small amount of Tantalum ore suitable for faceting. The rough was found in 1999 and was cut by Mike Gray; master gem cutter of Missoula, Montana.
    Measurements: 12.11 x 8.21 x 4.28 mm, 9.44 cts.
    Offered at no reserve.

    Rainbow of Africa 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
    October, 2015
    15th Thursday
    Bids + Registered Phone Bidders: 1
    Lot Tracking Activity: N/A
    Page Views: 1,603

    Buyer's Premium per Lot:
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