The Legion Jewelcrafting skill tier (ID: 2518) includes the 4 training recipes used in the quest “A Crowning Achievement” :
- Empyrial Circlet (ID: 36723)
- Empyrial Crown (ID: 36724)
- Empyrial Florid Malachite Setting (ID: 36725)
- Empyrial Hesselian Setting (ID: 36726)
This is the only profession that returns training recipes, so I assumed that this is a bug.