Amulet Howling Wolf Eagles Magic Circle Black Agate Pendant Necklace Best Amulets Collection. Amulet Howling Wolf Eagles Magic Circle Black Agate Pendant NecklaceAmulet Howling Wolf Eagles Magic Circle Black Agate Pendant Necklace Natural Black Agate Gemstone in Magic and Carved Circle Design Base Wolf Charm Gemstone Circle Size: 50mm (2 inches) Comes with Adjustable Necklace, Shortest: 15 inches, Longest: 24 inches