Authentic Antique Victorian pin Delphite rhinestones

Here is a wonderful Victorian era pin set in a pewter color setting with lots of ornate work. The stones are an opaque delphite blue with an emerald cut. Stones are all prong set and intact. Stones do show some wear but would probably buff up with polish. Backs to stones are all open. Pin back is crooked and could be straightened but still fastens well. It was probably used in a heavy coat fabric or cape. This large pin measures 1 3/4" x 2 3/8".