Turn your favorite birthstone into the most sophisticated look with this pear-shaped blue topaz and white lab-created sapphire split shank ring. Fashioned in sterling silver this design glistens with a 10. 0 x 7. 0mm pear-shaped swiss blue topaz. White lab-created sapphires line the split shank, adding shimmer to the style. Blue topaz is the traditional birthstone for december and is said to bring the wearer wisdom and understanding.