Serpentine Antiques has dated this piece to the 1860s.
The long gold bar splits to centre around a central amethyst mounted within 12 prongs, and held by two arms on each side, in which are set four rose cut diamonds between within a recessed gilded design.
Size of brooch is 3.25 inches long, with the diameter of the amethyst being 5/8 inches and 3/8 inches deep. The approximate carat count for the amethyst is 8-10 carats, a very large stone.
This was retailed by Munsey and Co. Ltd. of Cambridge, and is enclosed in the original blue domed case, which still retains a nice tight hinge and closure.
It is a lovely rare brooch of impressive size, with great style, found in the original fitted case, and in very good condition.
Pictures do not do it justice.
Serpentine Antiques has dated this piece to the 1860s.
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