Size below refers to glass centerpiece. There is some +/- to all of it.
The large are typically 1 1/4 - 1 7/16" long (across the axis of the beading) and 1 1/8" wide.
The medium are typically 1 1/4" long and 7/8 - 1" wide.
The small bracelets are 1 1/8 - 1 3/16" long and 5/8 - 11/16"wide.