RAINBOW MOONSTONE RING in SILVER. This Gemstone displays a wonderful blue and gold flash, quite unusual. This is a hand crafted designed ring. Moonstone is the birth stone for June. The best known rainbow moonstone metaphysical properties are the stone’s ability to offer mental clarity and shield its owner from negative energies. This ring is size 57 (0rP1/2), the ring weights 7.35g and the gemstone measures 22mm x 11mm.