Bar pin or collar pin, framed in the style of a safety pin. This is likely heavy gold-filled wire. Soldered onto this is likely sterling silver wings and a heart. Each wing has 3 seed pearls, each fitted into a hollow depression and held by blobs of metal. The pearls appear to be natural. The heart is open with very tiny seed pearls, 6 of them inserted into the bottom of the heart, also held by bits of silver. In the center, collet set is probably a round, faceted amethyst. 1 1/2" long 7/16" wide