This 18K yellow gold Bibi van der Velden Galaxy Spinning diamond ring features a spinnable sphere made from ancient tusk. It’s studded with gold stars, white diamonds, sapphires and a blue opaque stone, totalling 0.182 carats. Caged in crossover rings, it’s placed on a slim band. The interior is engraved with a hallmark and maker’s mark. It does indeed seem like the world revolves around us when we wear this Bibi van der Velden ring (which is why we never take it off).