Method for coloured coating on a watchmaking or jewellery external part component, comprising at least one visible surface prepared in advance on a substrate, this method comprising a step of vacuum-deposition of at least one main layer of titanium and silicon nitride (Ti, Si.sub.k)N.sub.x or of titanium and silicon nitride doped with oxygen (Ti, Si.sub.k)N.sub.xO.sub.y.

Dial assembly for a timepiece, comprising a base plate on which feet are fixed, and supporting a three-dimensional decoration which comprises at least one offset element at a remove from the base plate and fixed to the base plate through at least one foot, and which comprises at least one bush provided to be pressed in on an upper support abutting on a shoulder which this foot comprises, the dial assembly comprising a removable fitting which is used for pressing in all the bushes which the dial assembly comprises, and comprising, opposite a lower support which each foot comprises, a support pin of this lower support.

A crimping system (1) for a timepiece (6) or jewelry item comprising: a crimping support (3); a precious stone (2) mounted in or on the crimping support (3); and a flexible element (5) fastened to the crimping support (3) in such a way as to flexibly link the crimping support (3) to said item (6), such that the stone (2) can oscillate axially and radially relative to an axis of symmetry (15), following a movement of the item (6); the crimping system (1) further comprising a stop (18, 22) that is more rigid than the flexible element (5), the stop (18, 221, 241) being capable of cooperating with the crimping support (3), in such a way as to limit the range of axial and/or radial movement of the stone (2) when the latter oscillates. In particular, the crimping system (1) has the advantage, relative to the prior art, of allowing much easier and more reliable mounting of the stone (2) and of being better suited to the use of stones (2) of small dimensions.

The invention relates to a watch glass, comprising at least one gemstone, a setting, which has at least one pin-shaped projection and in which the gemstone is accommodated, and at least one continuous recess in which at least the pin-shaped projection of the setting is arranged, the pin-shaped projection being fastened to the watch glass. The invention further relates to a watch comprising a watch glass according to the invention.

In order to make a system for fastening gems to a watch dial, the dial is made of an upper plate-shaped element and of a lower plate-shaped element facing each other, the upper plate-shaped element being provided with openings for housing the gems in a visible manner and the lower plate-shaped element being provided with openings at the openings of the upper element and having the same size as these latter. Each of the openings mutually facing by pairs extends across the thickness of the respective plate-shaped element with an own peripheral edge inclined so that each opening narrows, within the section of the respective plate-shaped element, going from the surface of the plate-shaped element facing the other plate-shaped element towards the opposite surface thereof for forming a seat for housing and retaining a gem between the two elements.

An apparatus for securing an ornament to a watch is disclosed having a first end attachable to a spring bar of a watchband and a second end extending away from the first end with an opening to receive an attachment for an ornament. A second apparatus is also disclosed.

An apparatus for securing an ornament to a watch is disclosed having a first end attachable to a spring bar of a watchband and a second end extending away from the first end with an opening to receive an attachment for an ornament. A second apparatus is also disclosed.

An electronic device is provided. The electronic device includes a housing including a first surface oriented in a first direction, a second surface oriented in a second direction opposite to the first direction, and a side surface at least partially surrounding the space between the first surface and the second surface, a base ring located adjacent to an edge area of the first surface and rotatably mounted on the housing, a first ornamental ring detachably mounted on the base ring and configured to rotate relative to the housing together with the base ring, and an interference member configured to perform a linearly reciprocating motion between a first position and a second position closer to the second surface than the first position, the interference member being located adjacent to the base ring and the first ornamental ring. At the second position, the interference member may be configured to maintain or fix the base ring in a stationary state relative to the housing by being at least in partial contact with the base ring. Various other embodiments are possible.

The invention relates to a method for producing a watch glass having at least one gemstone, comprising the steps of providing a support glass, providing a cover glass, introducing at least one recess into the support glass, providing at least one gemstone, inserting the at least one gemstone into the at least one recess in the support glass, placing the cover glass onto the support glass and securing the entire arrangement consisting of the support glass and the cover glass by means of a holding element surrounding a circumference of the entire arrangement. Furthermore, the invention relates to a watch glass which is produced by the method according to the invention.

The invention relates to a method for producing a watch glass, in which at least one diamond or jewel, or other gemstone is embedded, the method comprising the steps of providing a carrier glass, providing a cover glass, introducing at least one recess into the carrier glass, providing at least one diamond, jewel, or other gemstone, inserting the at least one diamond, jewel, or gemstone into the at least one recess of the carrier glass, placing the cover glass on the carrier glass, and connecting the cover glass to the carrier glass such that an airtight connection point between the cover glass and the carrier glass is formed, which is subject to a suction cup effect. The invention further relates to a watch glass that is produced according to the method of the invention. The invention further relates to a watch having a watch glass according to the invention.