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