ALICE PLATERO Navajo Sterling Silver & Amethyst Modernist Ring Size 6.75. Signed “Alice Platero Sterling”. The top is a modernist design of Indian figure wrapped with a blanket with feather on his head. At least that is what it looks like to me! It is 1 9/16 wide on the top. The band is open but stiff. A size 6.75. Band tapers towards the back. Ring weighs 13.7 grams.