Callaway reviewed the patterns in the Northern Engraving library of aluminum finishes. A mother of pearl finish was chosen as a starting point. However, Callaway wanted to create further depth in the mother of pearl effect on aluminum. The nameplate needed to have the visual depth of an actual mother of pearl finish. The final medallion uses a layering of processes to achieve the movement and shift of color common in mother of pearl. The layout and color combinations for the medallion were explored in concept drawings and prototypes on aluminum. This step allowed Callaway designers to evaluate and fine tune the many possibilities available, actually laying the samples into their golf club.