Celtic Circle Moonstone Pendant by St Justin of Penzance Celtic Circle Moonstone Pendant A pewter disc pendant with Celtic knotwork design and a central rainbow moonstone gemstone. The Celts used knot work to decorate many of their artifacts. To them, the intricate patterns woven into spirals and knots symbolised the continuity of life. Diameter: 18mm Chain length: 18 inch (45cm) Comes on an 18″ tin plated trace chain. The venerable alloy of pewter is made of 92% tin, with copper and antimony to harden it and enhance casting. All of our St Justin Pewter products are LEAD FREE.Component information - Tin plated surgical steel Lifetime Guarantee As with all St Justin products, this item comes with a lifetime guarantee. If there is a fault in the workmanship, we will repair or replace it free of charge. Simple.