Amulet Celtic Shield Knot Puffy Heart Crystal Quartz Gemstone Pendant Necklace Best Amulets Collection. Amulet Celtic Shield Knot Puffy Heart Crystal Quartz Gemstone Pendant NecklaceAmulet Celtic Shield Knot Puffy Heart Crystal Quartz Gemstone Pendant Necklace Heart is Made from Natural Crystal Quartz Gemstone Celtic Shield Knot charm is made from Base, Heart Size: 30mm (1  inches) Heart is Polished from the Outside and has Natural Crystal Specks inside Comes with Adjustable Necklace, Shortest: 15 inches, Longest: 24 inches