A watch or jewelry component comprising a goniochromatic coating and its manufacturing process

Abstract

The invention relates to a watch or jewelry component (10) comprising a substrate (11) having, on a covering surface (110), a goniochromatic coating (12) composed of the following successively superimposed layers: – an opaque or semi-opaque reflective layer (121) on the covering surface (110) of the substrate (11), said reflective layer (121) having a thickness greater than 100 nm, and – a transparent layer (122) or semi-transparent layer on the reflective layer (121), said transparent layer (122) or semi-transparent layer having a thickness between 300 nm and 500 nm.