An adjustable ring is constructed from a first material to form at least a portion of a substantially circular shape. The first material includes two first C-shaped distal halves, and two second C-shaped proximate halves, and each of the halves arranged together to form a vertically bisected O-shape with a top portion removed defining a first arcuate void portion and a bottom portion removed defining a second arcuate void portion. The ring also includes a second material created to fit inside each of the two first and two second C-shaped halves of the first material to form a substantially circular shape defining an inner diameter for a given ring size. The second material includes at least one stress relief point and at least one size bar formed therewith. The second material is created to fit inside the first material using one or more of casting, co-casting, machining, forging, and stamping.

According to an aspect of the present invention, a device for securing a plurality of ring, comprising: two semi-elliptical members made of a solid metallic material; a notch arranged to receive a hinge member; and a hinge member, wherein the hinge member is arranged for insertion behind a plurality of rings. According to another aspect of the present invention, there is provided a chain configured to extend from a first notch on a first clasp to a second notch on a second clasp.

A jewelry joining mechanism is disclosed for coupling a main ring having a lower body portion and a neck portion, to a band including at least a first ring-shaped body and a second ring-shaped body. The mechanism comprises an integrally formed protruding notch extending along the lower body portion of the main ring, the notch having a greater maximum cross-sectional width than the main ring neck portion, and an integrally formed open-ended groove extending between the first and second ring-shaped bodies of the band, the groove being bounded in part by aligned and opposing flanges extending along at least a portion of a length of the groove, the flanges defining an open top end of the groove, wherein the groove is adapted to receive the notch such that, when the notch is fully disposed within the groove, the main ring and the band maintain a substantially fixed angular configuration.

A ring preferably made of elastic material, the ring including a groove having a first shape and a removable ring insert that fits within the groove.

An adjustable ring is constructed from a first material to form at least a portion of a substantially circular shape. The first material includes two first C-shaped distal halves, and two second C-shaped proximate halves, and each of the halves arranged together to form a vertically bisected O-shape with a top portion removed defining a first arcuate void portion and a bottom portion removed defining a second arcuate void portion. The ring also includes a second material created to fit inside each of the two first and two second C-shaped halves of the first material to form a substantially circular shape defining an inner diameter for a given ring size. The second material includes at least one stress relief point and at least one size bar formed therewith. The second material is created to fit inside the first material using one or more of casting, co-casting, machining, forging, and stamping.

A jewelry system includes an outer ring having an open shank and an aperture on either side of the shank, and an inner ring configured to be received within an aperture of the outer ring such that the outer ring and the inner ring are removably coupled to one another. The inner ring includes extending surfaces or protrusions at side points on opposite sides of its shank, near the base of the shank, which are configured to be seated within the apertures in the outer ring. The extended surfaces are located at approximately 5 o'clock and 7 o'clock on the inner ring and are configured prevent the movement of the inner ring with respect to the outer ring while the inner ring is coupled to the outer ring.

An exemplary transformable accessory may comprise a first half structure having a first abutment surface, the first half structure being coupled to a slotted shank with a slot therein; a second half structure having a second abutment surface, the second half structure being coupled to a posted shank with a post extending therefrom, wherein the post of the posted shank is received within the slot of the slotted shank; and a configuration in which the first abutment surface and the second abutment surface are either in contact or radially separated from one another.

A jewelry item includes an inner ring base, an inner ring arranged on the inner ring base, and a decorative body. A slot is provided on an outer surface of the inner ring base. The inner ring defines a through hole at a position corresponding to the slot. The decorative body includes a mounting column. The mounting column passes through the through hole and is limited in the slot. The decorative body is limited to the inner ring base by a triple limit locking structure, which completely prevents the decorative body and inner ring base from detaching. The limit locking structure is very simple and ingenious. The jewelry item is able to be assembled and disassembled by hands without using tools. Compared with the prior art, the jewelry item is more convenient for a user to assemble, which improves assembly time and efficiency.

Methods, systems, and devices for a functional cover are described. A removable cover (e.g., a functional cover) for a wearable ring device (e.g., a ring wearable) may include one or more electrical components positioned at least partially within the removable cover. The removable cover may further include a first electrical component exposed to an external surface of the removable cover, the first electrical component configured to contact (e.g., physical and electrically contact) a second electrical component of the wearable ring device, such as when the removable cover is in a mounted state on the wearable ring device. The first electrical component may be further configured to transfer electrical current, data, or both, between the one or more electrical components of the removable cover and one or more additional electrical components of the wearable ring device.

Systems and devices for a ring wearable cover with non-deformable circumference are described. The removable cover for a wearable ring device may include a ring-shaped surface configured to extend around a full circumference of the wearable ring device when the removable cover is in a mounted state on the wearable ring device and one or more mounting features that are disposed on the ring-shaped surface. The one or more mounting features may be configured to interact with a surface of the wearable ring device to lock the removable cover onto the wearable ring device when the removable cover is in the mounted state on the wearable ring device. In some cases, a diameter of the removable cover is unchanged while the removable cover transitions from the mounted state on the wearable ring device to an unmounted state off of the wearable ring device.