Here is the rest of it. $28 spent. The silver ball and Mexican sun necklaces were $2 each, the heavy flower pendant/earrings and Jerusalem cross were $12 each.
I might have overspent on those.
37.8 grams total.
Black opal is extremely expensive. If it is set in silver, then it's probably what is called an opal triplet, opal sandwiched between two very thin pieces of glass. The good opals would be set in gold or platinum, but that is a generalization.