How ring sizing works
The basics of ring size systems and what limits a resize.
Sizing systems vary by region
Hong Kong jewellers commonly reference Hong Kong, US and UK sizing systems, which are not simply offset by a fixed number — always confirm which system a quoted size refers to.
What limits a resize
Band width, stone setting style (particularly eternity and pavé settings), and certain alloys can limit how far a ring can be safely resized in either direction.
When to size at the jeweller versus a separate service
For rings bought directly from a brand, ask whether resizing is included or discounted before using a third-party service, since the original maker may offer better terms.
Practical checklist
- Confirm which sizing system (HK / US / UK) a quoted size uses.
- Ask whether the setting style limits how far the ring can be resized.
- Check with the original seller about resizing terms before going elsewhere.