Edwardian Platinum 14k Gold Diamond Onyx Horseshoe Pin BroochThis Edwardian era horseshoe pin features French cut onyx and single cut diamonds set in platinum. Weighing 5. 8 grams, the design showcases a symmetrical horseshoe shape, measuring approximately 1 1 8 inches in both length and width. The inner row is set with single cut diamonds for added brilliance, while the outer row consists of precisely cut black onyx for contrast. The platinum setting is detailed with fine openwork along the edges, adding to