Abalone is 8mm and the band is about 4mmx1mm.
Let me know what size you need in the "message to seller" at checkout.
This ring stacks very well - checkout another set featuring this ring: http://www.etsy.com/listing/50203237/rustic-distressed-sterling-abalone-rings
For current production times and other important information, visit the rest of my shop here: All raw stock for ring making is purchased from refiners who use and sell recycled metals. Add on a little white ring box for $1 - click here to see listing and add to cart: https://www.etsy.com/listing/117384329/small-cardboard-ring-box-rings-not