Decorated with a whimsical pattern of symbol-like shapes, each crescent moon in this pair of earrings cradles a cabochon of lab opal having a pale glow that calls to mind a full moon. The crescent's pattern is raised above a background that is oxidized dark.
Synthetic opals are man-made opals that have the same chemical composition, internal structure, physical properties, and appearance as natural opals. Many synthetic opals look so much like natural opal that trained gemologists can have difficulty separating them from natural opal.