Vintage Sandi Gale Toronto formal dress black with rhinestone trim

Beautiful vintage dress from Sandi Gale Toronto. Black sleeveless with a somewhat empire waist and A line bottom. Rhinestone detail at collar. Little bow closure at back. No size or material care tags legible. Approximate measurements in photos. Length is measured from back collar. Simple and sophisticated dress. In excellent vintage condition. Very minimal signs of wear. It is missing half of its hook closure at the top of the zipper(see photos)