The square is a shape not commonly found in nature. One exception is that of plant cells, which gives a hint as to what a square might mean. The knot work represents structure and foundation. Squares can be used as building blocks. A square can also deal with communication, since we have five senses and it is best if they work together in order for us to have ease in the world. Our Celtic Corners jewelry is handcrafted from 100 percent recycled metals, ethically sourced stones and gems wherever possible and comes with a lifetime guarantee against defects in materials and workmanship. These heirloom quality pieces are both socially responsible and eco-friendly. Our artisanal Celtic jewelry pieces are available in gold, gold over silver and sterling silver.