Vintage Pair of Clip on Earrings Brown, Rhinestone Gold Tone Unmarked

This is a great pair of brown and gold tone clip on earrings. I don't see brown very often. Rhinestone accents. I am unsure what the brown material is. It could be resin and/or some enamel. I really don't know for sure. Unmarked. Condition - excellent 1.5" diameter jewels3-9 Checked