- American Institute of Diamond Cutters, Inc.
 - Offers diamond cutting and polishing courses. Also provides cutting and consulting services. - American Jewelry Institute
- Offering classes in repair, metalwork, casting, modelling, and other areas.
- California Institute of Jewelry Training
- Provides courses covering all aspects of the jewellery trade. Arranges international visas.
- Drouhard National Jeweler's School
- Offers programmes in design and casting, jewellery repair, and diamond setting.
- Handworks
- Jewellery making classes at the Grist Mill Craft School.
 In the Studio Jewellery Courses
- Residential jewellery school offering short courses in design, production, engraving, and figurative modelling.- Metallo Nobile
- Jewellery design and production school and jewellery manufacturer.
- Mid Cornwall School of Jewelry
- Offers silversmithing and jewellery making courses. Includes engraving, pearl threading, precious metal clay, stone setting, and more.
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