A system for manufacturing hollow tubular jewellery comprises a die and core assembly for extruding a hollow metallic tube, wherein a core is positioned within a die of the die and core assembly to define three-dimensional surfaces or curved surfaces of a hollow metallic tube. A mandrel is provided for bending the hollow metallic tube, wherein the mandrel is fixed proximal from the die and core assembly. A laser source is provided, which is configured to emit a laser beam to form perforations on the hollow metallic tube. The system includes a fixture which is adapted to hold the hollow metallic tube. The fixture is configured to rotate and tilt to adjustably position a three-dimensional surface or curved surface of the hollow metallic tube perpendicular to the laser beam for forming perforations.

Method for making an ornamental article, which envisages a step for arranging, in a 3D printer, a finish plate made of metallic material provided with an inner face and an outer face, and an augmenting step for augmenting, in the 3D printer, an ornamental body formed by a plurality of separate connection elements mechanically engaged with each other, wherein the augmenting step is attained by means of successive welding of metal powder layers, so to fix the plurality of connection elements of the ornamental body to the finish plate. The method further comprises a step for cutting the finish plate into a plurality of separate surface elements adjacent to each other and mechanically connected to the plurality of connection elements.

To provide a decorative member having a cherry blossom pink color.

A cherry blossom pink decorative member of the present invention includes a base and a decorative coating formed on the base, wherein the decorative coating is formed by layering an undercoat layer and a finishing layer from the base side, the undercoat layer is a carbonitride layer composed of a carbonitride of a metal containing Ti and at least one selected from Nb and Ta, and the finishing layer is a Au alloy layer composed of an alloy containing Au, a metal having a silver color, and Cu.

A method for manufacturing ornaments made of precious metals is provided. A sheet, plate or foil made of pure precious metal—i.e. having a fineness equal to or greater than 999 parts per thousand—is provided, a profile of a desired shape is traced, and the sheet or plate is cut according to the profile to obtain an ornament having the desired shape. The method obtains ornaments made of precious metal of any two-dimensional shape in a short time with limited manufacturing costs. The method can be used to produce a large number of variants of commercial collections of jewels and/or ornaments made of pure precious metals according to the commercial choices of the manufacturer, and to obtain “tailor-made” ornaments made of pure precious metal—i.e. starting from a specific design of the user—in a very short time, or even immediately.

An ornament assembly with a suspension effect, including a base having a bottom frame and a transparent bottom cover, the transparent bottom cover being fixed on the bottom frame; a top frame fit combined with the base to form an integral body, wherein a transparent top cover is fixed on the top frame and the top cover is fit with the transparent bottom cover to form a holding space; a first magnetic member provided on the base; and an ornament, wherein a second magnetic member is provided on the ornament. The ornament is provided in the holding space and magnetic poles of the first magnetic member and the second magnetic member are oppositely arranged such that the ornament is suspended in the holding space under the repulsive force of magnetic forces.

According to an embodiment of the present invention, a method is provided for manufacturing an alloy for the decorative article, comprising the processes of: superimposing a plurality of alloys having different colors; heating the alloys; performing a metal diffusion of the alloys on a surface, wherein the alloys are mixed; forming a gradation of the materials across an interface; and processing a mass of the materials to adjust an alloy having a gradation of a color formed and appearing on the surface based on metal diffusion.

Each type of metal component part for two or more watch designs can be derived from instances of that corresponding type of MIM blank for that component part, which is formed from a same injection molding tool (respectively for each type of component part). An example instance of the MIM blank formed for a type of component part then has at least a portion of the instance of the MIM blank subtracted through a CNC milling process to form an interim shape and geometry of an instance of the type of component part for a given watch design. The CNC milling process can be applied to the MIM blank for that component part when the MIM blank is in its interim shape and geometry and has not yet been hardened to a finished shape and geometry of an instance of that type of component part for the watch design.

A method of manufacturing an article of jewelry with a druzy or geode effect, the method including: forming an adhesion mixture by mixing metal particles with a silica, shell, and/or clay with polymer, optionally in a liquid to form an adhesion paste; applying the adhesion mixture to an article of jewelry; applying a plurality of gemstones to the applied adhesion mixture to form a gemstone layer; melting the adhesion mixture without significantly melting the article of jewelry; and cooling the adhesion mixture to bond the gemstone layer to the article of jewelry.

A titanium member includes a first region where a plurality of first convex structural bodies extending in a first direction are arranged on the surface of the titanium member in a second direction orthogonal to the first direction, the first convex structural body has first convex portions arranged on an upper surface of the first convex structural body at an interval of several hundred nanometers along the first direction, and a height of the first convex portion is several ten nanometers. It is preferable that the first convex structural bodies adjacent in the second direction are arranged at an interval wider than the interval at which the first convex portions are arranged, and in the first convex structural bodies, a height including the first convex portion is higher than the height of the first convex portion.

A system for manufacturing hollow tubular jewelery is disclosed. It comprises die and core assembly for extruding hollow metallic tube, wherein core is positioned within die of die and core assembly to define three-dimensional surfaces or curved surfaces of hollow metallic tube. Mandrel is provided for bending hollow metallic tube, wherein mandrel is fixed proximal from die and core assembly. A laser source is provided, which is configured to emit laser beam to form perforations on hollow metallic tube. The system includes fixture which is adapted to hold hollow metallic tube. Fixture is configured to rotate and tilt to adjustably position three-dimensional surface or curved surface of hollow metallic tube perpendicular to laser beam for forming perforations. This helps in overcoming challenge of perforating unconventionally angled tubes at different angles.