Emerald, diamond and seed pearl necklace, Black, Starr & Frost, circa 1910

The double strand necklace supporting an ornament of quatrefoil shape centering a large cabochon emerald measuring approximately 19.2 by 17.6 by 13.8 mm., framed by old European-cut and single-cut diamonds, suspended from pearl strands anchored by a seed pearl tassel with diamond-set cap, mounted in platinum, length 16½ inches, signed B.S.& F.