Rainbow Sapphire Cluster Ring in 18K Vermeil Yellow Gold and Rhodium Overlay Sterling Silver 6.39 Ct. Brimming with colour and artistry, the rainbow sapphire cluster ring is a piece that celebrates individuality. A striking mix of oval, pear, and marquise-cut sapphires in fiery oranges, lush greens, golden yellows, and pink accents form a vibrant cluster full of life. The dual-tone of 18K vermeil yellow gold and rhodium overlay sterling silver enhances the gemstones. The accuracy of the displayed colours depends on the hardware and software. Colours may differ slightly from the original product. Gemstones are commonly treated to enhance color or clarity. This has not been researched for this specific item.