Amulet Lucky Heart Donut Shaped Charm Black Agate Gemstone Pendant Spiritual and Healing Powers Necklace Best Amulets Collection. Very Cute and Special Donut Shaped Lucky Heart Charm Necklace. Amulet Lucky Heart Donut Shaped Charm Black Agate Gemstone Pendant Spiritual and Healing Powers Necklace Made as Puffy Shape Heart and has this Lucky Donut Shape Hole used to Hang it over Adjustable Necklace. Heart Size: 30mm. Ready to Wear with Adjustable Cotton Waxed Cord which Adjusts from 16 up to 24 inches long. Comes with Gift Kind Packaging.