Goncalo Alves, a wood that comes mainly from Brazil, has been growing in popularity among builders who favor bold, contrasting figure on the back and sides. Sometimes called ”Tigerwood”, the color is an attractvie honey-tan with broad resddish brown stripes which often paint dramatic, symetrical shapes across the bookmatched guitar back. Although it is lightweight, it is only slightly porous and finishes nicely. Some say the tone is similar to Mahogany.