We received the rings couple of days ago and the quality of these rings are astonishing. The Tungsten with Koa inlay was just a beauty. It was light, with very good polish. I believe the hardness to be quite hard so probably won't risk it to become too banged up. Fitment was something I worried about but me being in a jewelry industry in the past, I had the ring size measurement. It fit perfectly well. The sizing for me at Happy Laulea is on point. Thank you!