Tourmaline is one of those stones that comes in a multitude of colors ranging from black to almost clear with pinks and greens being the most popular and blue being the most expensive. This multi-colored stacking ring with smooth bezel set tourmaline cabochons is a lovely representative of the rainbow colors typical of tourmaline. Cast in gold vermeil (18k gold plated over sterling silver). Do not expose to water, sunscreen, hand cream or other chemicals. Store in a small plastic jewelery bag to supress tarnishing. Rings can be quick-dipped (1-3 seconds) in a jewelry cleaner to restore metal. Please DO NOT use an ultrasonic cleaner. Size 8.5