COVER PART WITH ENGRAVED SAPPHIRE LAYER

摘要

A cover part (210) for a mobile apparatus (200) comprising a layer of sapphire comprising a first surface towards a user and a second surface opposite to the first surface; and the second surface comprising a pattern (100) engraved using a laser, the pattern comprising a plurality of engraved lines configured to provide engine turned visual effect for the user; and a decoration layer configured to enhance the engine turned visual effect for the user.