Mikimoto . The photograph shows a vintage pearl necklace by the Japanese brand Mikimoto with a signature openwork clasp made of 18-karat yellow gold (18K yellow gold). The pearls are rounded, a beautiful creamy color with a pronounced luster, and are separated by knots, which is typical of high-quality Akoya saltwater pearls. Key features of the jewelry: Clasp: An openwork carved clasp in the form of a lobster or box clasp is a recognizable vintage element of premium brands such as Mikimoto. Pearls: Akoya saltwater pearls, known for their mirror-like luster and regular shape. Assembly: The thread is gathered with a knot, which protects the pearls from rubbing against each other and prevents them from scattering if they break.