Abstract: A method for the production of a trim part for decorative purposes, especially for the forming of interior and/or exterior trim parts for motor vehicles, having a thin ornamental layer made from an inorganic and/or crystalline material that is fragile in thin-layer form, especially natural stone, includes the following method steps: first, a flexible, at least partially transparent stabilizing material is applied to the surface of a block of inorganic and/or crystalline material and is separated together with a thin ornamental layer from the block of inorganic and/or crystalline material; then the laminate of ornamental layer and stabilizing material is placed in a casting mold for the trim part; the casting mold is closed by moving an upper mold and a lower mold relative to one another, and the ornamental layer is thereby shaped into a desired three-dimensional form determined by the casting mold; then the casting mold is filled with at least approximately transparent material and the ornamental layer is the