Generally, some Lapidary Guilds/Clubs have machines available to teach on, if your main thought is “where can someone go to learn without having to lay down thousands of dollars first.” Since all your really need is a machine, dops, and maybe a trim saw, it’s pretty specialized for a general maker space–about the only other thing to add would be a computer for designing/searching designs.
Now, if you combined that with cabochon cutting, maybe silversmithing and lost wax casting, etc., you’re right back to a lapidary club 😉
–Eric