Interchangeable jewelry linking system and clasps thereof

A jewelry system comprising:

• a clasp, the clasp having a common partial ring segment, two arms that extend towards their respective ends from the ring segment, and a sleeve, the sleeve being slidable to a position covering at least portions of both arms in order to urge the clasp from an un-locked state towards a locked state, which is maintained locked by at least portions of both arms bearing against an inner surface of the sleeve;
• and
• a flexible chain;
• wherein each arm has an end, and the ends of the arms are more distant from each other in the un-locked state than in the locked state, and wherein, when both arms are pressed towards each other, they extend generally one alongside the other;
• wherein one of the arms at its end is attached to the chain of the jewelry system, the attached arm and the chain being collinear where the attached arm and the chain are attached;
• wherein the attachment is made permanent by welding;
• and
• wherein the sleeve is slidable over a full extension of the chain and is sized to cover and conceal the arms in the locked state of the clasp, and the common partial ring segment is sized to not permit its entrance into the sleeve.