I’ve been shopping online at Jan’s Jewels for about 9 yrs or so.. She has alot of deadstock vintage brass settings, bakelite and glass cabs and other fun vintage stuff. She’s really nice and if you aren’t sure what size rhinestones go in the settings you want, you can email her and she’ll help you out. She ships really quick, and I’m alway really happy with my purchases.
The description from her website: Jan’s Jewelry Supplies offers over 9,000 jewelry making supplies including vintage rhinestones, settings, findings, stampings, screen findings, cameos, chains, and sew-on rhinestone findings. Jewelry making supplies for the professional jewelry designer and the hobbyist.