18 Karat Gold Diamond Multi-Strand Ring This joyful ring features rich color, unique to its wearer. This piece is embedded with a precious gemstone of your choice and illuminating diamonds, resulting in a playful look. The Coco collection is the perfect balance of refinement and femininity in 18K gold. Coco draws inspiration from an enchanting floating star that is enraptured in a wave of impassioned color and magic.