A SILVER-TOPPED GOLD-MOUNTED DIAMOND AND SAPPHIRE BROOCH

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A SILVER-TOPPED GOLD-MOUNTED DIAMOND AND SAPPHIRE BROOCH
BY BOLIN, MARK OF SOPHIA SCHWAN, ST PETERSBURG, 1899-1904
Shaped as a leaf, set with two cabochon sapphires, gold-mounted on the reverse and set with rose-cut diamonds, all within diamond-set borders, the reverse with a detachable suspension loop, marked on mounts and pin
2¼ in. (5.8 cm.) wide