The Optical Crystal Beveled Diamond Cube is a beautiful crystal gift and office award that has many uses. It is a versatile, blank crystal cube that can be engraved with a logo, names and text using a sandblasting engraving technique. It is often used by corporations as an office achievement award, recognition gift for employees or a special retirement gift. It is very versatile for any occasion, elegant and functional. Available in four sizes; 1-1/2″, 2″ , 2-3/8″, 2-3/4″ and 3-1/8″..