Our Constellation Necklace is the perfect pendant necklace for anyone - whether you're a Virgo, Aries, or Libra! A perfect custom gift and timeless keepsake. Metal: 925 sterling silver; optional 18k yellow / white or rose gold vermeil Pendant diameter: 13 mm / 0.51" Chain style: silver round link cable chain Hypoallergenic: nickel-free materials used therefore suitable for those with metal allergies