This beautiful Hawaiian Koa lumber is kiln dried and has been surfaced on two sides. It has warm, rich colors as it is from the Big Island of Hawaii where the soil is more acidic. Fabulous iridescence is present in all boards. Boards are 95% clean or better (unless noted or marked as rustic) and are excellent quality! The rich depth of color in this lumber is unrivaled; it’s some of the finest color we’ve seen in years. Beautiful figure will vary from board to board. This bookmatch set has checks and splits present. There is a 1/8" bow that lays flat with minimal pressure!