Thanks for the suggestions. The Alameda antiques fair sounds amazing – I remember your posting about it for another question, and actually planned to go this month until I remembered on the afternoon of June 1 that that was the first Sunday! D’oh. I called to see if I could track down some of the people/stores who have booths there since I’m trying to find some things soon, but no luck.
Meanwhile, I’ve found some of the main vintage/estate jewelers in SF are Lang Antiques (the biggest collection), D. Tenenbaum, and Dianne’s Old and New Estates. Of course there are a few things here and there at other jewelry shops.
Now I’m really looking for replicas or newer-made or not-hand-made ones in the older styles, and still not sure where to find such things, though I’m pretty sure it exists since the vintage styles are more popular now.