HACOOL 925 Sterling Silver 12 Constellation Horoscope Necklace Pendant Jewelry 16" to 18" Chain Made with the finest 925 sterling silver for stunning detail that lasts a lifetime Chain: 16" (40.6 cm) - 18" (45.6 cm) adjustable chain included Featured AAA grade quality,wearing sterling silver prevent allergy,long time wearing keeps you a good health Pendant size: 0.62"*0.62" inch Please don't hesitate to contact us whenever you have any concern about this item. It will be our pleasure to give you a wonderful shopping experience.