$30.00
One in a zillion... that's about how many rocks there are and on a good hour or two beach walk there are only a couple handfuls of worthy pieces. This is one of them.
The metal is all Sterling silver. The size of the rock is indicated on the other photo here which includes a tape measure.
This one has a thinner gauge Sterling wire and a Swarovski crystal. It's a smaller stone and more feminine.