Patent ID: 7836726

Claim:
An accessory for dismantling a piece of jewellery, wherein the accessory is positioned to dismantle the piece of jewellery, wherein the piece of jewellery includes (a) an outer ring; and (b) an inner ring arranged concentrically to the outer ring, wherein the inner ring and the outer ring are pivotable in relation to each other, wherein the outer ring comprises (i) at least one aperture through which at least one decoration, provided on an outer periphery of the inner ring, is visible; and (ii) means for axial coupling of the inner ring and the outer ring, wherein the means for axial coupling includes at least one ball arranged in a housing, adjacent one end of the outer periphery of the inner ring and distant form the center of outer periphery of the inner ring, wherein the at least one ball is rollable in an inner periphery of the outer ring and the inner periphery of the outer ring forms a rolling path for the at least one ball, wherein the accessory includes: (1) a plate with a circular shoulder against which the inner ring of the piece of jewellery abuts and the circular shoulder has a diameter fitted to that of the inner ring of the piece of jewellery; and (2) a punch of cylindrical shape that abuts via a circular base thereof against the outer ring of the piece of jewellery when the accessory operates to dismantle the piece of jewellery.