A component and method of making the internal parts or movement for a timepiece or piece of jewelry that includes a substrate partially coated with a black layer and decorated with at least one stone, said black layer including carbon nanotubes or aluminum oxide, said substrate being at least devoid of the black layer on the portion facing the stone.

A component intended for internal parts or the movement of a timepiece or piece of jewellery includes a substrate coated at least partially with a black coat including aluminium oxide.

A moving mechanism for a decorative element of a timepiece, the decorative element including at least two decorative faces disposed around an arbor defining the axis of the decorative element. The moving mechanism includes a circular drive element arranged to be rotatable about a central axis and including an aperture arranged to reveal one of the decorative faces of the decorative element and inside which said decorative element is mounted to rotate about its arbor. The moving mechanism also includes first device for driving the decorative element in rotation about its arbor mounted on the circular drive element and arranged to cooperate with fixed actuation means provided in the periphery of the circular drive element, such that the decorative element rotates about its arbor to successively display its decorative faces in the aperture of the circular drive element while rotating about the central axis.

An intermittent display mechanism for a timepiece includes a mobile component in motion, an energy source for supplying a light emission source coupled with a light guide, and light emission control means. The light emission control means includes a flexible body bearing a flexible piezoelectric film or coating coated in an electrically insulating shell and attached to a fixed structure and including a distal zone overhanging with respect to the structure, arranged to interfere mechanically, at periodic or random times, with the mobile component during the travel thereof and move away from the rest position thereof before starting vibration of the flexible body and the piezoelectric film or coating, which constitutes an energy source, to convert the mechanical energy supplied by the mobile component into electrical energy supplied to the light emission source.

A moire-effect winding assembly for an automatic timepiece movement includes an oscillating winding mass which is movable relative to the movement. The winding mass is to be mounted to rotate on an axis of the movement. Part of the winding mass forms a heavy part allowing the mass to oscillate in response to the movement of the timepiece and to the force of gravity. The assembly also includes an element that is stationary relative to the movement. The stationary element is arranged under the winding mass. The winding mass at least partly displaces above the stationary element. The stationary element includes a first relief pattern and the winding mass includes a plurality of through openings defining a second pattern, so as to create a dynamic moire effect when the winding mass displaces above the stationary element.

An optical device including a transparent support provided with an upper face and a lower face which extends at a distance from the upper face, the transparent support forming a lens of plano-concave shape delimited on a first side by a planar surface, and delimited on a second side, opposite the first side, by a concave surface, the optical device also including a shutter which is disposed under the concave surface of the transparent support, at a distance therefrom, the optical device finally including a substrate disposed after the shutter.

A rotor for an automatic wristwatch is disclosed. A rotor for an automatic wristwatch according to an embodiment of the present invention includes: a coupling opening configured to be coupled to a rotation shaft of a spring; a body configured to form an area of about a semicircle with the coupling opening as a rotation axis; and a mother-of-pearl part configured to be coupled to the body, wherein the mother-of-pearl part may be accurately engaged with and seated on a seating portion formed on one surface of the body to form a complex shape with one surface of the body.

A horological component including a substrate and at least one first decoration component including at least one first photoluminescent material configured to procure a phosphorescent appearance. The horological component includes a second decoration component including at least one second material, the second material being metallic and configured to procure a metallic appearance, or variochromic and configured to procure a color that varies under the effect of a stimulus, the first decoration component and the second decoration component being arranged relative to one another on the substrate to form a decoration having a metallic appearance or a color that varies under the effect of a stimulus when the horological component is exposed to light and a phosphorescent appearance when the horological component is in the dark. A timepiece can include such a horological component.

A moir-effect winding assembly for an automatic timepiece movement includes an oscillating winding mass which is movable relative to the movement. The winding mass is to be mounted to rotate on an axis of the movement. Part of the winding mass forms a heavy part allowing the mass to oscillate in response to the movement of the timepiece and to the force of gravity. The assembly also includes an element that is stationary relative to the movement. The stationary element is arranged under the winding mass. The winding mass at least partly displaces above the stationary element. The stationary element includes a first relief pattern and the winding mass includes a plurality of through openings defining a second pattern, so as to create a dynamic moir effect when the winding mass displaces above the stationary element.

A watch (10) including a case (11) including a middle (12) to which a crystal (13) and a transparent back (14) are fastened so as to form an internal volume. The watch includes a horological movement (15) housed within the internal volume of the case (11), including a carrying structure through which extends an arbor (16) adapted to be rotated by the horological movement (15) and carrying, at one of the ends thereof, opposite the crystal (13), a time value indicator (17), and at the other end, opposite the back (14), a disc (18) on which extends a pattern (181) facing a graphical representation (142), the pattern (181) and the graphical representation (142) being shaped such that, when the arbor (16) is rotating, they cooperate with one another to generate a sequential animation by moir? effect, formed by a sequence of at least two distinct images.