Disclosed is a decorative object including an upper glass, a lower glass, a recessed pattern formed in the lower glass and facing the upper glass, a liquid filling the recessed pattern, the refractive index of the liquid being equal to that of the lower glass or differing from that of the lower glass by at most 10%, and solid elements which can move in the liquid.

A cover member includes a transparent substrate, a lamination, and a stain resistant coating. The lamination is disposed on at least a part of a surface of the substrate. The lamination serves as an antireflection coating that has a layer made of silicon nitride and a layer made of silicon oxide. The content of silicon nitride in the region to a depth of 150 nm from the outside surface of the lamination is 30-50 vol %. The stain resistant coating is made of a fluorinated organosilicon compound. The stain resistant coating is disposed on a surface of the lamination. The cover member is provided to a mechanical timepiece.

A cover member includes a transparent substrate, a lamination, and a stain resistant coating. The lamination is disposed on at least a part of a surface of the substrate. The lamination serves as an antireflection coating that has a layer made of silicon nitride and a layer made of silicon oxide. The content of silicon nitride in the region to a depth of 150 nm from the outside surface of the lamination is 30-50 vol %. The stain resistant coating is made of a fluorinated organosilicon compound. The stain resistant coating is disposed on a surface of the lamination. The cover member is provided to a mechanical timepiece.

A cover for an electronic device and methods of forming a cover is disclosed. The electronic device may include a housing, and a cover coupled to the housing. The cover may have an inner surface having at least one of an intermediate polish and a final polish, a groove formed on the inner surface, and an outer surface positioned opposite the inner surface. The outer surface may have at least one of the intermediate polish and the final polish. The cover may also have a rounded perimeter portion formed between the inner surface and the outer surface. The rounded perimeter portion may be positioned adjacent the groove. The method for forming the cover may include performing a first polishing process on the sapphire component using a polishing tool, and performing a second polishing process on the groove of the sapphire component forming the cover using blasting media.

A method for marking a product (1) with a photoluminescent mark, said mark comprising a photoluminescent portion (10) which is transparent under normal light conditions and revealed by photoluminescence under UV illumination, said mark further comprising a non photoluminescent portion (9) which is transparent under normal light conditions as well as under UV illumination, said method comprising: deposing on said product a stack, said stack comprising alternatively layers (2, 4), such as AlN, with a thickness of less than 1 micron and layers (3) of a second material, such as GaN, with a thickness of less than 10 nm; raising the transparency of said non photoluminescent portion (10) with a deposition of transparent material (6) or incorporation of ions into said non photoluminescent portions.

A timepiece component according to the invention includes a metallic luster portion which is constituted by a first material containing a nitride or a carbide of Ti, a nitride or a carbide of Cr, or a metal material, and a toning film which is constituted by a multilayer film of a metal oxide. The toning film preferably includes a layer constituted by a material containing at least one member selected from the group consisting of Ta.sub.2O.sub.5, SiO.sub.2, TiO.sub.2, Al.sub.2O.sub.3, ZrO.sub.2, Nb.sub.2O.sub.5, and HfO.sub.2. The timepiece component is preferably a crystal, a dial, a case, or a band.

A timepiece component according to the invention includes a metallic luster portion which is constituted by a first material containing a nitride or a carbide of Ti, a nitride or a carbide of Cr, or a metal material, and exhibits a metallic luster, a toning film which covers at least a part of the metallic luster portion, is constituted by a stacked body including a plurality of layers constituted by a material containing a metal oxide, and has a function of adjusting a color tone, and a functional film which is provided on a surface on the opposite side to a surface facing the metallic luster portion of the toning film, and imparts a specific function. The timepiece component is preferably a crystal, a case, or a band.

A timepiece component according to the invention includes a metallic luster portion which is constituted by a first material containing a nitride or a carbide of Ti, a nitride or a carbide of Cr, or a metal material, and exhibits a metallic luster, a toning film which covers at least a part of the metallic luster portion, is constituted by a stacked body including a plurality of layers constituted by a material containing a metal oxide, and has a function of adjusting a color tone, and a functional film which is provided on a surface on the opposite side to a surface facing the metallic luster portion of the toning film, and imparts a specific function. The timepiece component is preferably a crystal, a case, or a band.

The invention relates to an external part including a first portion based on photostructurable glass, at least one second portion based on at least one second material. According to the invention, one surface of the first portion is made integral with a surface of the second portion so as to form a one-piece external part.

A watch including: a rear cover; a dial fixedly connected with the rear cover, the dial and the rear cover defining a first cavity; a transparent touch screen located on a side of the dial facing away from the rear cover and fixedly connected with the dial, the transparent touch screen and the dial defining a second cavity; at least one pointer located in the second cavity and being rotatable relative to the dial; and a driving system located in the first cavity and configured to drive the at least one pointer to rotate and the transparent touch screen to operate.