Celtic Triquetra Knot Protection Amulet Jasper Heart Pendant Necklace Best Amulets Collection. Celtic Triquetra Knot Protection Amulet Jasper Heart NecklaceCeltic Triquetra Knot Protection Amulet Jasper Heart Pendant Necklace Pendant Size: 45mm (about 2 inches) Comes in Red Jasper Gemstone and Stainless Steel Celtic Charm Comes with Adjustable Necklace, Shortest: 17 inches, Longest: 24 inches Comes with Branded Packaging