Amethyst Flower Knot Pendant by St Justin of Penzance Pewter Pendant Amethyst Flower Knot Pendant. This intricate pewter pendant features a flower and entwined leaf design with an Amethyst. Comes on an 18″ tin-plated trace chain. Width 22mm Height 32mm. Supplied in a satin and velvet-lined gift box. 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 trace chain 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.