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    Description

    Very Fine Gemstone: Tanzanite - 32.39 Ct.
    Tanzania

    This fine example of Zoisite from Tanzania is large and striking. Tanzanites are noteworthy due to their renowned pleochroism, appearing as blue, violet and burgundy depending on crystal orientation and lighting. This gemstone is no exception to this trichroic phenomenon: it exhibits rich "Sapphire" blue, regal violet and fire red. The lab report states this fantastic gem is a blue-violet hue with a dark tone. It has very good proportions and strong saturation. It has a mixed cushion cut with a deep pavilion and is both eye-clean and transparent. Most importantly, there is no evidence of heat treatment supported by the presence of natural red flashes indicative of an unheated stone. The accompanying Universal Gemological Laboratory (UGL) lab report # 3283664 indicates no evidence of heat treatment to enhance the color. This gemstone is truly outstanding.
    Measurements: 18.4 x 16.1 x 12.58 mm, 32.39 cts.

    [Scale: 1 inch, with mark at 1 cm]


    Estimate: $30,000 - $50,000.

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

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    Auction Info

    Auction Dates
    June, 2016
    2nd Thursday
    Bids + Registered Phone Bidders: 0
    Lot Tracking Activity: N/A
    Page Views: 2,067

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