KALANI Flat Tungsten Carbide Wedding Band with Rare Koa Wood Inlay and Polished Edges - 6mm - 10mmKALANI Flat Tungsten Carbide Wedding Band with Rare Koa Wood Inlay and Polished Edges 6mm 10mm The rich, natural inlay of this Tungsten Carbide ring by Thorsten is made of rare 100% authentic Hawaiian Koa wood which cannot be cut down under Hawaiian law. Only trees that have fallen on their own can be harvested, making Koa one of the most expensive woods in the world. Engraving available! Does Not Delay Order Includes Thorsten Lifetime and Lifetime