Martinuzzi Accessories Light Blue Moon Opal Necklace. Half Moon Necklace Crescent Opal Moon Charm Necklace GUARANTEED HIGH QUALITY - ITALIAN DIAMOND CUT 925 Sterling Silver link chain. CREATED OPAL HALF MOON PENDANT SIZE: 8 x 11 mm. approximately. Color: Light Blue. CHAIN LENGTH: 15 inches with 1 inch extender chain. Adjustable from 15 to 16 inches. TYPE OF CLASP: Spring Ring. BEAUTIFUL PACKAGING INCLUDED - This moon necklace comes inside a lovely MARTINUZZI gift box with bow. Perfect gift for women on Christmas, San Valentine's, Mother's Day or any other celebration or holiday.