8mm Ring with Genuine Koa Wood Inlay and a Natural Turquoise Center Crafted with Comfort Fit, Men's or Women Wedding Band or Engagement Ring All natural Turquoise and 100% Koa wood Comfort Fit! Width 8mm and crafted with a flat design. This ring has been finished with a high polish in the inside of the ring, making it extremely comfortable. Quality! This koa ring is made with the best sourced koa wood and the best high grade quality steel. Crafted with high quality 316 stainless Steel 30 Day Money Back Guarantee!