conversion mounted with round brilliant and baguette cut diamonds, 5.85 cts. approximate total, in a fan design accented by carved cabochon cut rubies, emeralds and sapphires, 7.5 cts. approximate total. The platinum collar clips joined by a removable 18K yellow gold frame for the brooch. Stamped, "Plat." 28.2 grams. Provenance: The estate of a Lady, Dallas, TX. 1.25" H x 2.5" W, Circa - Mid 20th C.