9 Carat White Gold Ring. 6mm Thermochromic Liquid Crystal Centre. Handmade in Europe. Can be worn individually or stacked A splash of water is fine, but please refrain from immersing your mood ring in water. This will ensure your mood ring will continue to change as long as possible before settling into its colour and mood. Each mood stone is unique, it will evolve and transform on its own, eventually settling on a mood and colour tone which varies from every ring.