Abstract: The invention relates to a method and an apparatus for manufacturing a workpiece, specifically a rough diamond, into a product, specifically a brilliant. The method is performed by an apparatus providing a laser beam coupled into a pressurized fluid jet. The method comprises executing multiple cuts of the workpiece with the laser beam according to a predetermined cut-sequence to remove workpiece material with each completed cut. The method further comprises executing multiple rotations of the workpiece around the same axis of revolution according to a predetermined rotation-sequence. Thereby, a rotation is executed after a completed cut, and for executing a cut the laser beam is moved along a two-dimensional path.