These acrylic blocks are made with liquid inlay mixed with iridescent dust, to impart a beautiful depth of luminance.Great for making custom knife handles, inlays, and turning pens. Each block is approximately 5" long x 1-1/2" wide, x 1" thick.Every pair has an one of a kind pattern. Photo is a representative example. First photo shows an unworked block, second photo shows a block cut in half and polished to 220 grit.Sands easily with a faintly sweet smell. The more you polish it the better it looks. Take it up to 2,000 grit for that "wow" shine!Made in the USA.