A convertible Russian 12k yellow gold and diamond bar brooch. The

A convertible Russian 12k yellow gold and diamond bar brooch. The needle is detachable, can also be worn as a clasp. Elongated, moulded design, pierced at the centre and prong-set with a row of seven graduated old-cut diamonds (total approx. 2.1 ct, J/K colour, SI clarity) and six small rose-cut diamonds. Detachable brooch fitting, alternatively wearable as a necklace clasp. Hallmarks: St Petersburg assay mark, maker’s mark “DL”. Soviet post-hallmark: hammer and sickle, fineness mark 500, “M” for Moscow. Length 5.0 cm. Weight 11.47 g. St. Petersburg, c. 1890.

Estimation:€1,800

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