There are so many earrings that I love, but the top choices for me are Aldo Cipullo Onyx earrings and Harry Winston Drop Earrings (ideally with cabochon emerald or ruby).
Art Deco Rings are my favorite, but the truth is that all rings, spanning from Victorian (1850s) until Retro (1950) all fascinate me. My favorite collectors for antique rings are Estate Diamond Jewelry.