a background of a repeat pattern of diamond s.

abstract art artistic artwork backdrop background ballpoint creative decoration decorative design diagonal doodle dot dots dotted drawing drawn element flat freehand gel geometrical geometricsymmetry geometry graphic gray grey grid grunge hand illustration ink lattice line lines mark marker modern ornament outline paper pattern pen pencil picture polka poster repeat repeatable repeating repetition repetitive retro rhombus rough round scatted scribbles seamless shape simple sketch sketchy spot square style textile tile tip trendy vector wallpaper