Cloisonné Ring Square Shape Showa Era, Retro Dark blue with red and green polka dots I think it will look great on your finger. It's not a perfectly square shape, but slightly irregular, and the edges have a slight roughness. Please consider this as part of the handmade quality. 3.5 x 2 (cm), a bit large. Ring size is unknown, but approximately 1.8cm in diameter, which is about size 15-16. It's good for casual wear, but I think it would also look lovely with a kimono. New, unused item.