These are with the temporary stones. The ones we got just came in today, so the next time we're in Berkeley, we'll swap them out and lengthen the chain a bit (it was a touch too small -- but pretty good considering I figured out the approximate length by sneaking a necklace of relsqui's into another room and measuring it against the only implement I had handy -- my lab notebook!).
It's worth noting that relsqui has mentioned a couple of times that she'd have preferred a ring on the grounds that she'd never have to take it off and that it wouldn't bother her typing.
We did make the right call going with silver instead of gold -- it matches her coloring better anyway.