Sapphire is said to be a protective stone, guiding the wearer. It's also the birthstone of September, so what better way to show you care than with this sapphire cz necklace for her September birthday! Hanging on a 1mm belcher chain, the 4mm sapphire cz stone gives the pendant a 7mm height and a 4mm width. This sterling silver necklace is stamped with a 925 metal mark.