A method for fabricating a composite timepiece or jewellery component: a base is made in a substrate with an apparent surface remaining visible; each visible apparent surface is mirror polished; each polished apparent surface is coated with a first transparent or coloured semi-transparent layer of a first material in a dry process, or PVD or CVD or ALD process, or lacquering or zapon varnish process; a decorative element is affixed and bonded to an external surface of the first layer; the first layer and each decorative element is coated with a second layer of a transparent treatment material in a dry process, or PVD or CVD or ALD process, or lacquering or zapon varnish process.

A method for depositing a coating on a substrate (100), including a step of depositing a thin intermetallic layer (110) on the substrate (100), so as to obtain, at the end of this step, an external part (10) having a predetermined final colour.

A method for depositing a coating on a substrate (100), including successively depositing a thin intermetallic layer (110) on the substrate (100), so as to obtain an external part (10), and annealing the external part (10) in a dedicated enclosure.

A watch external part of the present invention is equipped with a substrate and a coating formed using an aerosol deposition method. The coating is selectively provided at a portion of a site observable in a state with the watch external part incorporated in a watch. The substrate is made of a material including one type or two or more types selected from a group consisting of sapphire glass, quartz, and plastic. The watch external part is further equipped with a ground layer having at least one layer between the substrate and the coating.

The present invention relates to a timepiece component comprising on at least one part of its surface a coating formed of one or more layers of organic pigments.

A case including a case main body, an operation member having an operation head portion which protrudes outside of the case main body, an exterior member which is detachably attached to the case main body while covering outer periphery of the case main body, in which the case main body has a protection projection provided on an outer peripheral surface such that an outward projection length becomes shorter from an upper side toward a lower side, and the exterior member has a housing portion which houses the protection projection.

A decorative item is made of a ceramic material, where ceramic material includes a carbide phase and an oxide phase, the carbide phase being present in a percentage by volume comprised between 50 and 95% and the oxide phase being present in a percentage by volume comprised between 5 and 50%. The decorative item is manufactured by a method of powder metallurgy.

A method for manufacturing a structured insert (10) for a mold for manufacturing a timepiece or jewelry component, for example a bracelet strand, including: —providing (E1) a template element (50) comprising a structured surface (51) with a pattern to be reproduced on a surface of a timepiece component; —covering (E2) the structured surface (51) of the template element (50) with a molding resin capable of reproducing a negative pattern of the pattern of the structured surface, and leaving the molding resin to solidify in order to obtain a structured insert (10); —separating (E3) the structured insert (10) from the template element (50), the structured insert (10) comprising a surface comprising the negative pattern; —optionally, cutting the structured insert (10) to the format corresponding to at least part of the timepiece component to be manufactured.

There is proposed a decorative element containing (a) a transparent gemstone with a faceted surface comprising convex curved regions, (b) a wavelength-selective layer, and (c) a photovoltaic cell.

Light, precious gold-titanium based alloy containing, by mass, at least 750% of gold, characterized in that said alloy has the following composition formula:

Ti.sub.aAu.sub.bM.sub.cT.sub.d

where a, b, c, d are atomic proportions such that:

a+b+c+d=1,

0.45≦a≦0.55; 0.41≦b≦0.495; 0.025≦c≦0.13; 0.001≦d≦0.025,

where M represents one or more elements taken from among a first group including Nb, V, Pd, Pt, Fe,
and where T represents a maximum of two elements taken from among a second group including Nb, V, Pd, Pt, Fe, Mo, Ta, W, Co, Ni, Ru, Rh, Ir, Cr, Mn, Cu, Zn, Ag, Al, B, Si, Ge, Sn, Sb, In, with the exception of said metals M comprised in said alloy.

Component for timepiece or for jewellery made from such a light, precious gold-titanium based alloy.