GREY MOONSTONE RING. A splendid, and rare, Grey Moonstone from Mozambique has been set into a solid , hand engraved ring. This is a beautiful ring, featuring 11.2g of Silver and a 3.8ct gemstone (12mm x 6.5mm). Grey Moonstone is a gemstone with the power of the goddess. Energy of love and healing is condensed in it. Grey Moonstone is also popular as a great healing gemstone. This ring is size 57 (o P1/2).