14-09-18-2158NE01A Georg Jensen.jpg
The silver and labradorite floral necklace designed by Georg Jensen c.1915 that sold for $17,000 (£10,970) at Skinner of Boston.

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It was impressed GI and 830 within a circle of dots - a mark used c.1919-27.

Offered together with a pair of similarly marked ear pendants, each designed as a blossom set with labradorite cabochons, the lot went well above its estimate of $2000-3000.

Skinner specialist Victoria Bratberg said: "The early pieces we have sold featuring labradorite [a favourite stone of Jensen's found in both Scandinavia and Canada] usually bring very strong prices at auction. A similar necklace is pictured in Georg Jensen: A Tradition of Splendid Silver by Janet Drucker."

The sale on September 9 also included 33 lots from the family of the Cotswolds-trained American Arts and Crafts jeweller and enameller Frank Gardner Hale (1876-1945).

The buyer's premium was 23%.