Patina is a process, not a filter.

Handling, brushing and natural oxidation can gradually change a walnut’s colour and surface. The rate and result depend on the pair, care and conditions; there is no universal timetable.

Artificial ageing creates the appearance of a long handling history. A dark colour or bright surface alone cannot establish age. Look at the texture, colour transitions, surface response and the supporting history together.

A local yellow patch, concealed yellowing, ordinary natural colour variation and artificial ageing are different situations. Inspect the location, structure and changes over time.

If concealed yellowing becomes visible after a purchase, preserve the original records and contact us for assessment. Do not try to hide the change through oil, chemicals or reshaping.