An external component for timepieces or pieces of jewelry, made of a light precious alloy containing titanium and palladium, according to the atomic formula Ti.sub.aPd.sub.bM.sub.cT.sub.d, where a, b, c, d are atomic fractions of the total, such that a+b+c+d=1. a is 0.44 to 0.55, b is 0.30 to 0.45, c is 0.04 to 0.24, and d is 0.001 to 0.03. The alloy includes at most two metals M, taken from among Nb, V, Fe, Co, Au, Pt. Each metal trace T has an atomic percentage of less than 3.00% of the total alloy, from among Nb, V, Mo, Ta, W, Fe, Co, Ni, Ru, Rh, Ir, Au, Pt, Cr, Mn, Cu, Zn, Ag, Al, B, Si, Ge, Sn, Sb, and In. The alloy contains at least 0.05% of boron, and contains at least 50% by mass of palladium.

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 deforming by thermal expansion 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.

Silicone is placed between an upper die and an injection-pressing rubber-lid upper die, and the silicone injection passage is pressurized by the injection-pressing rubber-lid upper die. With this, the silicone is caused to flow into an injection port through the silicone injection passage. Then, sequentially through the injection port and the disc silicone-flow passage, the silicone is caused to flow toward an inner periphery of a silicone injection space. Further, the silicone flows between both circumferential sides of the silicone-flow deflection region. In this way, the silicone flows in a peculiar manner in conformity with a shape of the silicone-flow deflection region.

The present disclosure describes a method for making fused meteorite, a method for bonding the fused meteorite to an article jewelry, and articles of jewelry comprising fused meteorite.

The specification relates to a gemstone setting. The gemstone setting includes a gemstone, a mounting surface and a braze joint. The braze joint is formed from a reactive metallic alloy with the reactive metallic alloy adhering the gemstone to the mounting surface. The braze joint is substantially concealed from a direct line of sight from a top portion of the gemstone by preventing excessive alloy from getting outside a desired braze area.

Hardened cobalt alloys for forming jewelry, including finger rings as well as methods and processes for producing such alloys. In one illustrative embodiment, such an alloy can contain cobalt in an amount of from about 35 wt % to about 65 wt %, in combination with chromium in an amount of from about 16% wt to about 32 wt %, and molybdenum in an amount of from about 8 wt % to about 31 wt %. Aluminum, silicon, boron, titanium, and other hardness enhancing materials may also be present. Hot investment casting may be used to form items from the alloys, which may then be shaped or polished to a final form. Annular finger rings constructed from these materials may have a white appearance similar to white gold or platinum, may have increased resistance to scratching compared to traditional cobalt chromium rings, and may be easily be removed by cracking in an emergency situation.

Described includes an alloy consisting of at least 33 wt. % to at most 75.5 wt. % gold, at least 1.5 wt. % to at most 45 wt. % silver, at least 8 wt. % to at most 45 wt. % copper, the remainder being zinc. The invention also relates to a semi-finished product made from such an alloy, a piece of jewelry having at least one such semi-finished product, and a method for producing such a semi-finished product.

Light, precious gold-titanium based alloy containing, by mass, at least 750 of gold, characterized in that said alloy has the following composition formula:
Ti.sub.aAu.sub.bM.sub.cT.sub.d
where a, b, c, d are atomic proportions such that:
a+b+c+d=1,
0.45a0.55; 0.41b0.495; 0.025c0.13; 0.001d0.025,
where M represents one or more elements taken from among a first group including Nb, V, Pd, Pt, Fe,
and where T represents a maximum of two elements taken from among a second group including Nb, V, Pd, Pt, Fe, Mo, Ta, W, Co, Ni, Ru, Rh, Ir, Cr, Mn, Cu, Zn, Ag, Al, B, Si, Ge, Sn, Sb, In, with the exception of said metals M comprised in said alloy. Component for timepiece or for jewellery made from such a light, precious gold-titanium based alloy.

A precious metal alloy includes palladium and rhodium for manufacturing jewelry pieces like jewelry, jewelry articles, bijouterie, watches and watch cases and/or writing utensils and/or a component thereof. The precious metal alloy used includes palladium in an amount of 40-60% by weight and rhodium in an amount of 40-60% by weight, and that the precious metal alloy used may include gold, platinum, ruthenium and/or iridium in an amount of between greater than 0 and 10% by weight, or alternatively in an amount of between 2% by weight and 5% by weight, or alternatively in an amount of 3% by weight. The corresponding amount of rhodium and/or palladium is then replaced by the aforementioned secondary alloy components, wherein the amounts of rhodium and palladium as well as of the provided aforementioned secondary alloy components complement substantially to 100% by weight.

A timepiece part includes: a substrate; and a first coating configured from a material containing cobalt as a primary component, and 26 mass % to 30 mass % of Cr, and 5 mass % to 7 mass % of Mo. The first coating has an average signal intensity of oxygen of 0 counts/sec to 150 counts/sec as measured by SIMS relative to a 1.0 m-thick reference film of a composition containing Co: 62.8 mass %, Cr: 28.2 mass %, Mo: 6.0 mass %, C: 1.5 mass %, and Ar: 1.5 mass %.