A laminated edge is achieved by cutting & permanently attaching a strip of stone to the underside of the countertop edge to give the appearance of a thickened edge.
Use 5/8” thick exterior or marine grade plywood.
Bring your approved cabinet drawings or counter/surface measurements. It should identify the stone selection, type of edge, areas receiving backsplashes, type of sink and appliance locations.
No more that 6″ for 2cm (3/4″) material and no more that 10″ for 3cm (1 1/4″) material. Anything further will require support (corbels, etc.)