These  are a pair of Hills Gold cherub or angel post earrings from the Rushmore Golf Company.  They are marked RGO for Rushmore Gold and also marked 10k and 12k.  They are in a combination of yellow,rose and  white gold. The butterfly clasps are unmarked and I don't think they are gold. Very good condition in original case-the liner has an extra pair of holes in it. Always happy to combine - check out my other auctions.