Heathergems Celtic Knot Necklace Sterling Silver Trinity Knot Made in Scotland Sterling silver Celtic Knot necklace measures approximately 11/16 wide x  tall on an 18" chain. Crafted from sterling silver for a nickel and allergy free necklace. Each gem varies in color due to the natural dying process of the heather. Presented in a lovely purple gift box that reads Heathergems Made in Scotland.