This double wedding ring stained glass pattern with heart and monogram initials has a border that will fit standard bevels. The border is one inch in width, and length goes  1" 3" 5" or 6" .  This particular pattern comes enlarged already, at 24 x 13 inches.  the Heart is a standard 3 piece bevel set.  Your heart may be a solid piece, in which case, just trace it over the printed pattern to get the size exact.