I finally figured out the best hook to use to crochet wire with and viola!
I used a copper and silver wires with these agate chips.  Each chip is one of a kind which adds to the design interest. This is a barrel clasp in case I did not mention this before.  The length is  7 1/4".  I read copper is good for pain but I don't know.  Agate, I read, has some theraputic  value.  I just wanted to design a pretty crocheted wire cuff.