Natural Blue Sapphire Earrings White Diamond Centers 10K Yellow Gold Cluster Flower Setting Natural blue sapphires and white diamonds are set in 10k yellow gold. Each earring contains six round cut sapphires set in a flower, snowflake, or cluster design. A white round diamond is in the center. Each earring measures approximately 6 mm across, just under 1/4 inch. They are stud, post earrings with butterfly style backs. They are in gently loved, vintage, excellent condition.