Made of solid sterling silver with 925 hallmark stamp Single sided design Measures 5/8 inches wide by 1 1/4 inches (3 cm) tall Natural rainbow moonstone gemstone Celtic knotwork is representative of Irish, Welsh and Scottish heritage, and is symbolically a representation of the infinite nature of the cycles of life. The moon has long been the symbol of the goddess, and the phases represent the parts of a woman's life: the waxing moon represents the Maiden, the Full Moon the Mother, and the Waning Moon the Crone.