Disclosed is a luminous necklace structure. The present invention adopts the following technical solution: a luminous necklace structure, comprising a battery case; a chain rope with both ends connected with the battery case; pendant(s), at least one of which is connected with the chain rope, so that the battery case can supply power to the chain rope and make the pendant(s) luminous. The beneficial effects of the present invention are as follows: the chain rope and the light shade adopt diversified connecting methods which are more flexible and convenient for use, the movable connection between the light holder and the light shade makes the luminophor changeable, thus prolonging the service life of the luminous necklace and meanwhile saving the costs, and the same luminous necklace is allowed to be provided with either luminous or non-luminous light shade, thus enhancing the luminous effect of the necklace.

The invention relates to a cemented carbide composition producing method for precious metal, which includes a titanium nitride component contained therein and shows excellent workability, corrosion resistance, reduction in weight and other desirable mechanical properties, as well as the low amount of nickel used as a metallic binder and an aluminum oxide coating helps to suppress potential negative skin reactions.

A jewelry chain having a plurality of links including a plurality of connecting links and one or a plurality of decorative links. Each decorative link comprises an outline of an alphanumeric character and becomes part of the chain by connection from at least two connecting links. The connecting links can easily pass through open sections of the alphanumeric character outline to allow rotation and sliding movement in at least two different directions so that the alphanumeric character can provide different appearances when the jewelry chain is worn. The chain can form or be incorporated in necklaces, bracelets or earrings.

A pendant comprises a first part that is detachable from a second part. The first part comprises an attachment for a necklace. The second part contains a friction-actuated explosive and at least one defensive substance. The second part comprises an outlet for the defensive substance. The first part is connected to the friction-actuated explosive such that when the first part is detached from the second part the explosive may be actuated to expel the defensive substance from the outlet.

The present disclosure provides a string adjuster for lengthening or shortening jewelry chains, threads, ropes, or other materials with layering capability/adjustments. The string adjuster may take on any decorative shapes to be a clip or a charm. For example, an adjuster for changing a length of a string loop formed by the adjuster may include two or more channels for receiving the string. One of the two or more channels provides a tight fit to the string. The adjuster further includes an anchor disposed in another one of the two or more channels for affixing an end of the string to the adjuster.

Illustrated views of a multiple use necklace device and a bracelet for dispensing perfume and beauty products is presented. The multiple use necklace device and bracelet are useful for providing a jewelry adornment for a neck of a person. Furthermore, the multiple use necklace device and bracelet are useful for providing access to one or more perfumes in a single piece of jewelry. The multiple use necklace device and bracelet also allows for other beauty products to be carried within the multiple use necklace device and bracelet.

Provided are a silver jewelry article formed using pure silver, which has high Vickers hardness and prohibit the occurrence of discoloration and its method. Disclosed are a silver jewelry article and its method, wherein the Vickers hardness is adjusted to 60 HV or higher, and when the height of the peak of 2θ=38°±0.2° by an XRD is designated as h1, and that of 2θ=44°±0.4° is designated as h2, h2/h1 is adjusted to 0.2 or greater.

Implementations of an expandable link are provided. In some implementations, the expandable link comprises a first piece and a second piece moveably connected in an adjustable length configuration. In some implementations, a method of using the expandable link comprises adjusting the expandable link to increase or reduce the length of the expandable link. In some implementations, a method of using the expandable link comprises connecting one or more of the expandable links to form an adjustable portion of a piece of jewelry or to form a piece of adjustable jewelry.

An unobtrusive augmented reality (AR) system can be used to assist the wearer in every day interactions by projecting information from the contact lens display onto the retina of the wearer's eye. The unobtrusive augmented reality system includes a necklace and a contact lens display that are unobtrusive to the wearer and the wearer's surrounding environment. The necklace of the unobtrusive augmented reality system generates power and data for the contact lens displays. The necklace and contact lens display include conductive coils inductively coupled by a magnetic field. The inductive coupling allows data and power generated by the necklace to be transferred to the contact lens display. A projector in the contact lens display projects images generated from the data onto the retina of the wearers eye.

A pivot chain end for a jewelry is provided in the present embodiment. The pivot chain end has a 360 degree linking mechanism for chains having jewelry items which helps in arresting the improper fall issue of the necklace when worn by a wearer. The pivot chain end includes an O ring which is circular in shape linked with a back chain having an abutted cylindrical portion with a through hole and a metal disc having three flat flanks and one curved ridged side, wherein the metal disc allows the screw to pass through within the disc and connect the O ring, through a partially threaded body on the screw, thereby securing the metal disc with the O ring and enabling the O ring to freely rotate 360 degree axially as per movement of the back chain.