925 Sterling Silver Earring Width: 10 mm Earring Height: 15 mm Packaged in a beautiful gift box. Model #: E4143 Blue Opal We included blue opal inlay in many of our Hawaiian inspired jewelry collection. The color of the opal jewelry changes depending on the angle of its light reflection. When the opal is rotated, the color shifts between the light sky blue and the sparkling clear ocean blue.