A Retro gold brooch in the form of a bejeweled hand wearing an amethyst and ruby ring and bracelet, in 14k. Attributed to Paul Flato

References:
Elizabeth Irvine Bray's "Paul Flato: Jeweler to the Stars," page 32 for drawing depicting similar modeling of fingers
Sotheby's 2016 Magnificent Jewels auction for a 1940s jeweled hand brooch that recalls Flato's designs of the same period and similarly features long fingers, sculpted nails, and large emerald-cut colored stone