Do not default automatically to the larger or smaller size. Try both with a gauge or sample close to the intended width and inside profile, then compare knuckle clearance, security at the base, movement, and comfort more than once under ordinary conditions.
Choose between two plausible ring sizes by comparing the complete ring, the joint, the finger base, and repeated ordinary-condition trials.
What this guide covers
- Keep both candidate sizes
- Match width and profile
- Test joint and base
- Repeat before deciding
Between sizes is a fit question, not a rounding rule
Decision boundary
A chart can identify two candidates, but it cannot see how the intended band passes the knuckle or settles at the base. Keep both options open until a matched physical trial resolves the tradeoff.
Choose by the unresolved risk
Smaller catches at the joint
Do not force it. Test the larger candidate with the intended width and profile.
Larger turns or slips at the base
Compare the smaller candidate and ask whether the actual construction changes the choice.
Both feel plausible
Repeat the trial at ordinary times and let a jeweler compare the complete fit instead of guessing.
Compare two candidate sizes
- 1 — Use matched samples
Choose gauges or rings close to the intended width and interior profile.
- 2 — Test knuckle passage
Neither option should require painful force to pass the joint.
- 3 — Test base security
Observe turning, slipping, edge pressure, and how the ring rests during ordinary movement.
- 4 — Repeat the trial
Compare again under ordinary conditions rather than deciding from one unusually hot or cold moment.
Between-size questions
Should I always choose the larger size?
No. Width, profile, joint clearance, base security, and actual wear all belong in the decision.
Can I average two measurements?
Keep both readings and their methods visible. Test the actual candidates instead of creating a false precision.
What if the design cannot be resized easily?
Confirm the fit and resizing constraints before ordering rather than relying on a later adjustment.