White Copper Qiankun Circle Pendant Necklace

Of Nezha’s weapons the Qiankun Ring is the simplest: a full circle, no start, no end. Investiture of the Gods has him at seven bathing in the Jiuwan River; he stirs the water with his sash and the crystal palace shakes three times; the ring leaves his hand and strikes the patrolling sea yaksha, then Ao Bing. Story is story. The object itself is only a closed loop, the joint hidden inside the body of the ring, and it has to run smooth under a fingertip before it feels like one whole thing. Whether the band was cut from solid stock or welded from two halves, a practiced hand knows at once: a weld always reads a little different in temperature.

The difficulty of a ring sits entirely on that joint. Cast white copper comes out of a two-part mold with a seam at the parting, and sanding it invisible takes several passes by hand — a machine cannot reach into that corner. The body has to be even in thickness too; one thick spot beside a thin one shows the moment light crosses it. A polished ring picks up fingerprints; a darkened one wears better, since prints do not show on matte and scratches do not jump. Dark is not automatically good: done well it still carries a metal sheen, done badly it is simply grey.

Diameter decides where it hangs. Too large and it lies on the chest like a lock plate; too small and it reads as a keyring. On a cord the ring finds its own lowest point and sways a little as you walk, which a flat plaque never does. On the necklace version the chain passes through the ring, so the ring becomes one link of the chain and cannot flip over; the pendant version takes a cord you supply, knotted behind, and the face stays outward longer. A slender neck wants a shorter chain, so the ring sits just below the collarbone. Over time the ring wears a groove in the cord — change the cord every six months rather than waiting for it to break.

New white copper runs silver; worn a while it takes on a warm yellow cast, which is copper doing what copper does in air. On a person who sweats it happens faster. Wipe it dry with a soft cloth and leave it; do not go at it with a silver polishing cloth, because what you rub off does not come back. Take it off before washing your hands or swimming, and by the end of one summer the difference is obvious. Stored loose with other metal it is the ring face that dents first, so keep it in its own pouch. The inside has to be polished as well: a burr you cannot see is what saws at the wrist.

The taiji-and-bagua subject on a ring takes the sense of a cycle that begins again, and it works just as well read as completeness. The ring has no front or back, so it does not look wrong worn askew, and that is where it asks less of you than a carved plaque. When you give one there is no need to reach for the mystical register; “full circle, nothing missing” carries it. Worn by a younger person, a black cord looks cleaner than a silver chain, and plain clothes set it off better. At the counter, try the diameter against your fingers: if a knuckle passes, it will not choke the wrist.