Wear your sign. We've created the ultimate Zodiac Birthstone Necklace. A chunky ball chain with an 18k gold pendant, studded with your personal power stone. The perfect addition to your necklace stack, or an impact piece to wear solo. 18k Gold Plated, Stainless Steel This item comes with a choice of your, one gemstone pendant and one zodiac pendant. 18mm zodiac pendant Chain length 17" (43cm), extends to 19" (48cm)