Abstract: One or more ring re-sizing attachments are appended to the internal circumference of a ring band so that a ring band large enough to pass over a knuckle remains comfortably fit around the finger below the knuckle. Each attachment includes a base defining an internal volume surrounded by a raised wall. A button slidingly engaged in the base internal volume defines an inner volume, and one or more springs are held in the button inner volume. As the one or more springs are compressed, the button moves into the internal volume of the base, increasing the space within the band to move the band beyond a knuckle. Once the band is beyond the knuckle, the spring(s) urge the button upwardly, causing the lips of the button to contact ledges or lips projecting from the sidewall of the base, to tighten the fit of the ring band around the finger.

Abstract: One or more ring re-sizing attachments are appended to the internal circumference of a ring band so that a ring band large enough to pass over a knuckle remains comfortably fit around the finger below the knuckle. Each attachment includes a base defining an internal volume surrounded by a raised wall. A button slidingly engaged in the base internal volume defines an inner volume, and one or more springs are held in the button inner volume. As the one or more springs are compressed, the button moves into the internal volume of the base, increasing the space within the band to move the band beyond a knuckle. Once the band is beyond the knuckle, the spring(s) urge the button upwardly, causing the lips of the button to contact ledges or lips projecting from the sidewall of the base, to tighten the fit of the ring band around the finger.

Abstract: A ring re-sizing attachment is appended to the internal circumference of a ring band so that a ring band large enough to pass over a knuckle remains comfortably fit around the digital finger below the knuckle. The attachment includes two or more telescoping buttons joined to a base, with a spring, such as a conical spring, urging the buttons away from the base. The spring is compressed and the buttons urged together to increase the space within the band to move the band beyond a knuckle. Once the band is beyond the knuckle, the spring urges the buttons away from the base to tighten the fit of the ring band around the finger.

Abstract: A ring re-sizing attachment is appended to the internal circumference of a ring band so that a ring band large enough to pass over a knuckle remains comfortably fit around the digital finger below the knuckle. The attachment includes two or more telescoping buttons joined to a base, with a conical spring urging the buttons away from the base. The spring is compressed and the buttons urged together to increase the space within the band to move the band beyond a knuckle. Once the band is beyond the knuckle, the spring urges the buttons away from the base to tighten the fit of the ring band around the finger.

Abstract: There is provided a method for assessing the integrity of grip of a stone in a jewellery setting having plural gripping claws to grip said stone, the method comprising heating the stone; measuring conductive transfer of heat from the stone to each of said plural gripping claws; and comparing said conductive heat transfer to said each gripping claw, wherein a marked difference in conductive heat transfer to any of the gripping claws indicates a lack of integrity of grip. Suitable apparatus is also provided.

Abstract: The invention provides a setting for a precious stone comprising a support for a precious stone; contact means for establishing a contact between the support and a stone within the support; a detector for detecting a break in the contact; and an emitter for emitting a signal on detection of the break in the contact. The setting provides a means of alerting wearers of an item of jewellery that the precious stone is loose within its support.

Abstract: There is provided a method for assessing the integrity of grip of a stone in a jewellery setting having plural gripping claws to grip said stone, the method comprising heating the stone; measuring conductive transfer of heat from the stone to each of said plural gripping claws; and comparing said conductive heat transfer to said each gripping claw, wherein a marked difference in conductive heat transfer to any of the gripping claws indicates a lack of integrity of grip. Suitable apparatus is also provided.