Gold, turquoise, diamond and garnet snake necklace, circa 1840, designed as a series of articulated fancy links, the head embellished with turquoise cabochons between cabochon garnet eyes, the eyes and mouth highlighted by rose diamonds, the snake's mouth is open to reveal gold fangs and serves as the clasp, gross weight approximately 48.95 grams, circumference approximately 400 mm. Accompanied by a fitted case signed Mortimer & Hunt, 156 New Bond Street.