This bar pin may have been used during the turn of the century by either male or female. A man would have used it as a collar pin to hold his large collar points in place by his tie. The women also used on their collars for the same reason.
This type of simple "C" clasp or catch can be found on brooches dating primarily to the 1890s although some carryover designs in the early 1900s incorporate this finding as well. It was used on small Victorian bar pins.
Pin is 2" x 1/8". It has 7 rhinestones--3 on each end. with one in the middle.
The back is stamped sterling with an unknown mark, possibly a makers mark.