Yin Yang Energy Best Friends or Love Couples Lucky Coin Donuts Dragon Eye Hematite Iron Amulet Necklaces Best Amulets Collection. Yin Yang Energy Best Friends or Love Couples Lucky Coin Donuts Dragon Eye Hematite Iron Amulet Necklaces Set of Two Cute and Attractive Lucky Charms Coin Shape Donut Crystals. Size:One Donut is 30mm and Second one is 40mm. Double Lucky Yin Yang Set Amulets. Comes with Cute Gift Style Packaging