The term 'diamond pattern' is often used to describe the distinctive pattern of interlocking diamonds and lines found in the popular ARGYLE pattern. ARGYLE is a type of knitwear that originated in Scotland in the 17th century, and has since become a fashion staple. The diamond pattern is created by knitting two different colors of yarn together in a repeating pattern. The pattern is often seen on socks, sweaters, and other clothing items.