A GROUP OF ANTIQUE JEWELRY, LATE 19TH/20TH CENTURY

Comprising an antique pin designed as a stylized umbrella set with rose-cut diamonds mounted in gold, the handle tipped by a pearl, marked on pin bar with French maker's mark, unidentified, and French hallmark; a vinaigrette designed as two rectangular-cut citrine opening to reveal a bright cut yellow gold hinged divider, apparently unmarked; and a ring set with a square-cut emerald surrounded by faceted diamonds all set in gold filigree, apparently unmarked
21⁄2 in. (6.3 cm.) long, the pin; 11⁄8 in. (2.9 cm.) long, the vinaigrette; Size 7.5, the ring