Sapphire birthstone pendant necklace by Claudette Worters. This real faceted blue sapphire birthstone pendant necklace is cast in sterling silver with a little row of genuine sparkling diamonds, plated in 18 carat gold. Sapphire is the birthstone for the month of September. Customise your diamond birthstone necklace by adding small gold oval charms. Add a letter or a number to be hand stamped onto them. You could add your child's initials to this semi precious birthstone necklace or your own. Y