Four Mother/daughter sets are included in this listing. A pierced and carved mother of pearl set, the larger being 1 1/2 inch the smaller 1 1/8 inch. A pair of brass picture buttons depicting a lion in a jungle, the larger is 1 inch the smaller 3/4 inch. A glass triad pair featuring pearlized, silver luster and gold luster, the larger is 7/8 inch the smaller 1/2 inch. A composition pair the larger 1 5/8 in diameter the smaller is 7/8 inch. I think the discoloration on the larger is in the mix of the composition. It doesn’t seem to be on the surface. All buttons are in good antique condition.