For when you want a crystal ball on the go! Not only sapphires and rubies can have stars- but quartz can too! This 4 rayed star smokey quartz cabochon is set in 14k yellow gold with a hand-engraved Cat's Paw pattern on the shank. By Susan Stein. Smokey quartz cabochon measures 11mm. Finger size 5, can be sized up or down 2 sizes.