These coin rings are handmade to order using actual United States 90% silver proof quarters. Because of the high silver content of these coins these rings will not irritate your skin. The shank width of the ring of these rings measures approx. 6 to 7mm, the larger the ring the narrower the band becomes. These state quarter coin rings are great for travel souvenirs, going away gifts and even silver wedding bands. Rep your state and start a conversation with one of these unique rings.