Three Vintage Shell Bangles

Three Vintage Shell Bangles -One white shell and brass bangle with pink swirls. 3/8" thick, 2-7/8" outer diameter -One is pink shells on a silver tone bangle. 1/4" thick, 2-7/8" diameter -The third is darker shell chips set in brass. 1/8" thick, 2-7/8" diameter There are chips in the thicker white bangle, shown in the last 3 closeups.