These are likely black onyx cufflinks, a timeless and sophisticated accessory typically made with a sterling silver base. They feature a round, polished black gemstone (the onyx) set in a metal bezel.
- Design: The cufflinks have a classic, round face with a smooth, highly polished black onyx gemstone. The simple, minimalist design exudes a bold and elegant look.
- Material: The metal surrounding the stone and the backing mechanism is most commonly sterling silver, often with a rhodium-plated finish for long-lasting shine and tarnish resistance.
- Mechanism: The reverse side features a bullet-back toggle closure, which swivels to secure the cufflink through a shirt's buttonholes.
- Usage: They are an ideal accessory for formal events, business meetings, or weddings, providing a refined touch to a formal shirt.
