Magic Sun Ying Yang Amulet Black Agate Pendant Necklace Best Amulets Collection. Magic Positive Energy Sun Ying Yang Amulet Black Agate Lucky Wish Stone Pendant NecklaceMagic Sun Ying Yang Amulet Black Agate Pendant Necklace Made from Natural Gemstone Comes with Adjustable Cord: Shortest 15 inches, Longest 24 inches Comes with Branded Packaging