Sleek and sculptural, these post-back earrings have a gently curved shape reminiscent of squared pebbles. Crafted in your choice of 14k-gold or rhodium plated brass. Martha Calvo: Miami-based jewelry brand known for bold chains, freshwater pearls, and playful, high-impact pieces made by hand. Designed to be mixed, matched, and enjoyed. 14k-gold or rhodium plated brass. Post backs. Product #899767.