A pair of diamonds is a term used to describe two diamonds that are cut in the same shape and size. The term is often used to refer to a matching set of diamonds, such as those found in an engagement ring or other jewelry. The term 'ARGYLES' is a seven-letter word that is used to describe a type of diamond cut that features a pattern of small, triangular facets. This type of cut is often used to create a unique look for a pair of diamonds.