Overview A fine and elegant necklace comprising figaro style 18-carat yellow gold links, interspersed with oval moonstone cabochons, graduating in size, set in 18-carat gold collets. Lobster style clasp. Moonstone is famed for the property it possesses called 'Adularescence'. Because of the formation of the gemstone, light appears to billow across the gem in a milky, bluish luster, emanating from below the surface.