AN ELEGANT ART DECO MABE PEARL, DIAMOND AND BLACK ONYX JABOT PIN, CARTIER

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AN ELEGANT ART DECO MABE PEARL, DIAMOND AND BLACK ONYX JABOT PIN, CARTIER
Designed as an open rectangle, one half, pavé-set with diamonds and the other, with black onyx, joined on one end by old European-cut diamonds to a mabé pearl and on the other, by calibré-cut black onyx to a black onyx hemisphere, mounted in platinum, with French hallmarks (with a concealed pendant hoop), circa 1925
Signed by Cartier, No. 53521