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 or piece of jewellery includes at least one component made of a palladium-based alloy. The palladium-based alloy consists of, expressed in weight percentage: from 50% to 55% of palladium, from 45% to 50% of rhodium, more than 0% and less than or equal to 5% of silver, and more than or equal to 0% and less than or equal to 5% of at least one element R selected from the group consisting of iridium, ruthenium, platinum, titanium, zirconium, and rhenium. Said at least one component made of the palladium-based alloy has colorimetric values according to the L*a*ab chromatic model (CIE 1976) such that L* is comprised between 88 and 90, a* is lower than or equal to 0.8 and b* is lower than or equal to 3.

Abstract: 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.

Abstract: A grey gold alloy which is nickel-free, cobalt-free, iron-free, silver-free, copper-free, zirconium-free, niobium-free, chromium-free and manganese-free, including, expressed in weight percent, from 75.0 to 76.5% of Au, from 15 to 23% of Pd, from 0.5 to 5% of Rh, from 0 to 7% of Pt, and from 0 to 5% of at least one of the alloying elements Ir, Ru, Ti, In, Ga, B and Re, the respective percentages of all the alloying elements adding up to 100%.

Abstract: A piece, in particular for jewellery or timepieces, is made of a material comprising a synthetic matrix loaded with particles of a precious or semi-precious stone. The particles have a particle size d90 between 50 ?m and 2 mm, preferably between 100 ?m and 1 mm, and more preferably between 150 ?m and 500 ?m.

Abstract: A zinc-free gold alloy containing by weight between 37% and 38.5% of gold, between 4 and 32% of palladium and/or silver, between 25% and 54% of copper and between 0% and 10% of gallium. A timepiece or piece of jewellery or gemstone jewellery made of this alloy.

Abstract: A decorative piece includes a support made of a material having no usable plastic deformation in which at least one hollow is arranged. The hollow is filled with a first material forming a substrate in which at least one housing is arranged. The housing is arranged so that at least one aesthetic element is housable therein. The substrate further includes a gripper elastically deforming to retain the aesthetic element in the housing. The gripper further includes at least one setting element. A method for setting an aesthetic element on a support includes taking a support provided with at least one hollow, taking at least one aesthetic element, filling the hollow with a first material, making a setting hole and a gripper in the first material, and setting the aesthetic element by placing it in the hole and by deforming the gripper so as to retain the aesthetic element.

Abstract: A setting including an open elastic ring carrying elements for setting a decorative element, the setting being arranged to be placed in a radially compressed state inside a hollow provided in a substrate of an article to be decorated.

Abstract: A zinc-free gold alloy containing by weight between 37% and 38.5% of gold, between 4 and 32% of palladium and/or silver, between 25% and 54% of copper and between 0% and 10% of gallium. A timepiece or piece of jewellery or gemstone jewellery made of this alloy.

Abstract: A nickel-free and cobalt-free platinum alloy including, expressed by weight, from 95.0% to 96.0% of Pt, from 0.5% to 4.5% of Ir, from 0.01% to 2% of Au, from 0 to 2% of Ge, and from 0 to 1% of at least one of the alloying elements Ru, Rh, Pd, Sn, Ga, Re, the respective percentages of all of the elements of the alloy adding up to 100%.

Abstract: The present invention relates to a piece, in particular for jewellery or timepieces, made of a material comprising a synthetic matrix (2) loaded with particles (3) of a precious or semi-precious stone, said particles (3) having a particle size d90 comprised between 50 ?m and 2 mm, preferably between 100 ?m and 1 mm, and, more preferably between 150 ?m and 500 ?m.

Abstract: A decorative piece includes a support made of a material having no usable plastic deformation in which at least one hollow is arranged. The hollow is filled with a first material forming a substrate in which at least one housing is arranged. The housing is arranged so that at least one aesthetic element is housable therein. The substrate further includes a gripper elastically deforming to retain the aesthetic element in the housing. The gripper further includes at least one setting element. A method for setting an aesthetic element on a support includes taking a support provided with at least one hollow, taking at least one aesthetic element, filling the hollow with a first material, making a setting hole and a gripper in the first material, and setting the aesthetic element by placing it in the hole and by deforming the gripper so as to retain the aesthetic element.

Abstract: The present invention relates to a decorative piece comprising a support produced in a material which does not include plastic deformation and in which at least one hollow is provided, characterised in that said hollow being filled with a first material being an at least partially amorphous alloy forming a substrate in which at least one housing is provided, said at least one housing being designed so that at least one aesthetic element can be housed therein.

Abstract: The method makes it possible to produce a decorated element for a timepiece or piece of jewelry. This decorated element may be, for example, a watch dial. The method includes the steps of taking a base substrate, and micromachining on said base substrate a mould or decorative partitions in a programmed pattern, and filling the mould or the decorative partitions with at least one filler material to obtain the decorated element. The filler material may be enamel.

Abstract: A method for assembling a stone on a setting support, the stone being cut to exhibit a table, a crown, a girdle and a pavilion. A substrate with a recess for the stone, the recess forming, between the substrate and the stone, a peripheral free space in the vicinity of the girdle and of the zones of the crown and of the pavilion contiguous to the girdle, the peripheral free space including a bottom having a conductive surface. Electroplating, in the peripheral free space, a metal layer in the vicinity of the girdle and of the zones of the crown and of the pavilion contiguous to the girdle, so as to confine the girdle in the metal layer to form, around the girdle, the setting support. The stone and its setting support are released from the substrate.

Abstract: A method for assembling a stone on to a mounting includes sinking the stone into an adhesive layer on a substrate and then positioning a setting sheet around the stone above the adhesive layer so as to form a peripheral free space between the setting sheet and the stone, at least at the level of the girdle and of areas of the crown and the pavilion adjacent to the girdle. Then, a metallic layer is deposited in the peripheral free space from the setting sheet, at least at the level of the girdle and of the areas of the crown and the pavilion adjacent to the girdle, such that the metallic layer and the setting sheet form the mounting.

Abstract: The invention relates to a decorative piece comprising a plurality of stones and a device for fixing the stones relative to each other, the fixing device comprises a single base made of a first material which makes it possible to attach all the stones relative to each other by one of their faces, the kites of stones are mounted edge to edge relative to each other so that said single base is masked, characterised in that the first material is an at least partially amorphous alloy. The invention likewise relates to the method for manufacturing such a piece. The invention relates to the field of jewellery, gemstone articles or timepieces.

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 grey gold alloy which is nickel-free, cobalt-free, iron-free, silver-free, zirconium-free, niobium-free, chromium-free, indium-free, gallium-free and manganese-free and includes, expressed in weight percent, from 75.0 to 76.5% of Au, from 15 to 23% of Pd, from 1 to 7% of Cu, and from 0 to 5% of at least one of the alloying elements Ir, Ru, B and Re, the respective percentages of all the elements of the alloy adding up to 100%.

Abstract: A timepiece or piece of jewellery made of a nickel free and cobalt free gold alloy, the composition of which includes by weight between 75% and 77.5% gold, between 1.2 and 1.6% palladium, and between 20.1 and 23.8% copper.