According to the Fair Folk books, characters start with Graces equal to their virtues. There are also charms for creating new Graces for the Fair Folk, but they start at level 1. However, I can't find any rules on how to increase the Graces - do they increase by experience expenditure (if so, what's the cost?), are they re-forged into higher level artefacts, or is it something else?
Any edition is fine.