Abstract: A bezel (1) for a timepiece, including an annular slot (2) with a bottom (20) and two walls (21, 22), wherein a ring made of a luminescent material (3) is disposed on the bottom, the ring (3) being topped by a second ring (4) made of a mineral material occupying the volume of the slot. The bezel (1) includes in each of the two walls (21, 22) a seal (5, 5?) cooperating with the second ring (4).

Abstract: The water-resistant watch case includes at least one crystal mounted on an upper side of a middle, a fastening gasket positioned between an upper annular inner wall of the middle and an upper annular outer wall of the crystal. The crystal includes an annular peripheral surface below the upper annular outer wall inclined at an angle smaller than 90° in relation to an axis perpendicular to a plane of the watch case. The peripheral surface comes into contact against an annular inner surface of the middle inclined at an angle similar to the inclination of the annular peripheral surface and below the upper annular inner wall of the middle. The annular peripheral surface and/or the annular inner surface of the middle includes a domed contact portion for a contact on an annular contact line between the two surfaces.

Abstract: A system (1) for operating a horological movement of a watch, which system including a coupling device (40) configured to operate at least one function of this movement by including a control device (2) and a support piece (3) intended to be unmoving relative to the horological movement of the watch and in which piece (3) this control device (2) is movably mounted, the control device (2) including a gripping element (7) capable of being driven in a rotational motion, a first drive element (31) including the first coupling end (32) and the first drive zone (36), and a second drive element (8) mounted such that it is rigidly connected to the gripping element (7), this second drive element (8) including the second coupling end (33) and the second drive zone (37).

Abstract: An operating device (1) for a watch including a control member (2) mounted movably in a support piece (3) of the device (1), the piece (2) being intended to be unmoving relative to the horological movement of the watch, the control member (2) including a gripping element (7), a drive element (8) rigidly connected to the gripping element (7) and a transmission member (31) being rotated by the drive element (8), the transmission member (31) being configured to cooperate with a member for actuating a manual winding mechanism of the device (1), capable of storing mechanical energy, in order to operate a first function of the watch, and with a hand-setting member of the device (1) to control a second function of the watch, and the drive element (8) being configured to cooperate with an operating member (4) to operate third and fourth functions of the watch.

Abstract: A control device (1) for a watch including a crown (2) mounted movably in a support part (3) of this device (1) and intended to be fixed with respect to the movement of the watch, the crown (2) being capable of being displaced axially with respect to its longitudinal axis (A) towards a control position in which a rotational drive element (8) of the crown (2) is capable of cooperating with a ring (10) mounted movably in a casing ring (29) of a control member (4) of the device (1), the ring (10) being configured to actuate a mechanism of the watch movement implementing a function of the watch when the crown (2) is rotated.

Abstract: A ceramic part with a colour gradient, and in particular to a bezel of a timepiece, made using a method involving the injection of at least two differently-coloured ceramic materials, the ceramic materials being mixed in different weight ratios to create a plurality of mixed materials forming a colour gradient.

Abstract: A ceramic part with a colour gradient, and in particular to a bezel of a timepiece. made using a method involving the injection of at least two differently-coloured ceramic materials, the ceramic materials being mixed in different weight ratios to create a plurality of mixed materials forming a colour gradient.

Abstract: A timepiece or piece of jewellery or gemstone jewellery made of a zinc-free, germanium-free, nickel-free, cobalt-free, indium-free gold alloy, the alloy containing, in weight percent, between 75% and 77.5% of gold, between 0.5% and 3% of palladium, between 10% and 18% of silver and between 5% and 13% of copper, wherein the respective percentages of all the alloying elements add up to 100%.

Abstract: A timepiece and a tool to separate a back from a middle, which jointly delimit a watch case of this timepiece, inside which a horological movement is housed, this tool having the appearance of a wedge, i.e. an acute-shaped part formed by a first face and a second face which intersect at an angle of less than 90° and which are connected to one another by a rounded portion, the first face of the tool being oriented such that it extends parallel to a mean plane wherein the horological movement is located when an horologist engages this tool between the back and the middle in order to separate this back from this middle, the rounded portion being connected to the second face by a curved portion, the curvature whereof is directed towards the inside of a surface delimited by the first and second faces.

Abstract: A measuring support for a watch movement, designed to constitute a radial support, in a radial direction, of a control member or of a support zone, which includes a watch head including a watch movement, or which includes a watch movement enclosed in a test cap, in a position of radial support under stress of the watch head or respectively of the cap on the measuring support, wherein the measuring support includes either a single contact point in the radial direction, or a pair of lateral contact points that are symmetrical with respect to the radial direction.