Antique Edwardian Onyx Sapphire and Diamond Reversible Swivel Stick Pin

A Rare Hexagonal Edwardian Jewel with Two Contrasting Gem-Set Faces This exceptional antique stick pin, dating to the Edwardian period, features an ingenious reversible swivel construction that reveals two distinct jeweled faces within a finely engineered hexagonal frame. One side presents a dramatic composition of calibré-cut black onyx framing an inner arrangement of sparkling old-cut diamonds. Rotating the jeweled head reveals the reverse—a brighter sapphire and diamond composition arranged in concentric geometric borders. Fine milgrain edging outlines the different sections, emphasizing the crisp hexagonal geometry while introducing the delicate surface detail associated with Edwardian jewelry. The contrast between the black onyx, richly colored sapphire, bright old-cut diamonds, cool white-metal setting, and warm gold pin shaft gives the piece remarkable visual depth. The swivel mechanism allows the wearer to alternate between a dark, graphic onyx presentation and a more brilliant sapphire-and-diamond face. Elegant, versatile, and mechanically sophisticated, it may be worn on a lapel, tie, cravat, or scarf. Key Features • Period: Edwardian, circa 1900–1915 • Type: Reversible swivel stick pin • Shape: Hexagonal • Gemstones: Black onyx, sapphire, and old-cut diamonds • First Face: Calibré-cut black onyx and old-cut diamonds • Reverse Face: Sapphire and old-cut diamond arrangement • Design: Concentric geometric borders • Detail: Fine milgrain edging • Construction: Rotating double-faced jeweled head • Metal: White-metal jeweled setting with a gold pin shaft • Condition: Excellent estate condition • Perfect for: A lapel, tie, cravat, scarf, or important antique stick-pin collection Collector’s Note Reversible swivel stick pins are considerably less common than conventional fixed-head examples because they required both sophisticated engineering and two carefully finished decorative faces. This example is especially striking for its architectural hexagonal form and the dramatic contrast between black onyx, sapphire, and old-cut diamonds. Its two presentations allow the jewel to shift from understated and graphic to brilliant and formal, reflecting the versatility and refinement of Edwardian accessories.