Acacia is a family of trees that Hawaiian koa belongs to. This is not Hawaiian koa but comes from a very similar species found throughout Asia. This instrument was built on one of the Indonesian Islands with hands on guidance and quality control from the Ko'olau Ukulele Company. These are constructed by the finest instrument makers and to Ko'olau specs and design. They are really good!! This soprano looks and sounds superb! The tuning keys are very high quality, the nut and saddle are bone, and the gloss is thin so the top can breathe. They made this one just right!