A method and apparatus detects an unknown deposit in soil of a known mineral or gemstone using characteristic scents of the mineral or gemstone. The method may disturb the soil, for example, by causing a chemical reaction in at least part of the soil such that a mineral or gemstone present in the soil emits a characteristic scent. The unknown deposit of the known mineral or gemstone can be detected in real-time or near real-time in the field.

A method and apparatus detects an unknown deposit in soil of a known mineral or gemstone using characteristic scents of the mineral or gemstone. The method may disturb the soil, for example, by causing a chemical reaction in at least part of the soil such that a mineral or gemstone present in the soil emits a characteristic scent. The unknown deposit of the known mineral or gemstone can be detected in real-time or near real-time in the field.

A center-cast tool for casting a non-uniform object is provided. The center-cast tool has a body having a casting bay recessed into the top side of the body. A base forms the bottom of the casting bay. First and second apertures extend through the base and the bottom side. The second aperture intersects the first aperture in perpendicular orientation to the first aperture to form an aperture intersection. The aperture intersection forms four opposing right angles on the base at the center of the bay. The distance between adjacent right angles in the base is equal to the length of each side of the bezel of a jewelry article into which the finish machined irregular object will be set. In another embodiment, a first release hole extends through the base and the bottom side on a first side of the aperture intersection.

The present invention relates to jewelry and specifically jewelry with retroreflective inlays. Specifically, the invention relates to a chain link or other jewelry item, with an inlay trough formed in the chain. The inlay trough can be created in a number of ways including casting, CNC milling, photolithography and chemical milling. Once an inlay trough is created, a retroreflective material is embedded in the trough. The retroreflective material which has a bonded top layer of acrylic or polyester is then sealed into the trough with a resin layer that creates a highly reflective, water-resistant, and protective surface. The disclosed invention covers the chain or other jewelry of similar style and the method for producing the jewelry.

A bezel making device is provided which may be used for the manufacture of fancy bezels, castellated bezels, serrated bezels, and other jewelry structures using a bezel material. In some embodiments, the device may include a front plate and a back plate. The front plate may have a first crenellated edge, the first crenellated edge having a plurality of first merlons and first crenels, in which each first merlon of the plurality of first merlons and first crenels is separated from an adjacent first merlon by a first crenel. The back plate may have a second merlon (preferably of a second crenellated edge having a plurality of second merlons and second crenels) and the bezel material may be held between the front plate and back plate by tensioning the bezel material between the plurality of first merlons and first crenels and the one or more second merlons.

The invention relates to a jewelry item (10) comprising:—at least one cable (12) arranged to form a support mesh (14),—a plurality of decorative elements (16) threaded on said at least one cable (12) and shaped to structure the support mesh (14) according to a predetermined three-dimensional profile. The invention also relates to a jewelry assembly comprising at least two jewelry items (10) according to any one of the preceding claims and means for securing the support meshes together.

A double ended hand tool created to pick up place and position flatback crystals, gems or other tiny items is disclosed. The tool contains a hollow, conical end which securely encases each crystal allowing the operator to easily position the crystal with no slip. The tool has a first end and a second end coupled by a shaft. The first end has a wax tip which allows the user to pick up crystals or other small items. The second end has a hollow narrow extended portion which allows the users to manipulate the crystal or other small items.

A method and a device for encasing gemstones, such as diamonds, in glass. In order for their optical effects and appearance to be maximized, the gemstones are placed at a defined position and at a defined orientation. A suction cannula is provided for that purpose with an opening to fit the gemstone and to hold the gemstone by vacuum. Guide elements, such as spirals or meshes, are carried on the suction cannula so as to assure even distancing from the walls of the glass tube into which the gemstone is inserted.

A method and a device for encasing gemstones, such as diamonds, in glass. In order for their optical effects and appearance to be maximized, the gemstones are placed at a defined position and at a defined orientation. A suction cannula is provided for that purpose with an opening to fit the gemstone and to hold the gemstone by vacuum. Guide elements, such as spirals or meshes, are carried on the suction cannula so as to assure even distancing from the walls of the glass tube into which the gemstone is inserted.

A method of making a decorative article (1) such as a jewellery piece, the article comprising a body (2) having a decorative layer (5) and an element (3) set into the body. The method comprises: providing an element that is at least partially coated with a removable layer (4), setting the element into the body, coating the element and the body with the decorative layer, and removing the removable layer and the decorative layer from the element.