Use a ring that already fits
Measure the internal diameter of a ring worn on the correct finger. A jeweler measurement remains the most reliable option.
Measure at the right moment
Finger size moves through the day and with the seasons. A size taken in the cold, straight after exercise, or late in the evening will not represent a normal day.
- Measure at room temperature, mid-afternoon, on a day with no unusual salt or heat.
- Take the measurement three times on separate days and use the most repeated result.
- The ring should pass the knuckle with light resistance and not spin freely once on.
- Dominant hands are often a quarter size larger than the other hand.
Wider bands feel tighter
A wide or stacked profile can require a different size from a fine solitaire.
As a working guide, a band of six millimeters or more commonly measures about a quarter size tighter than a narrow one, so we size it up accordingly. A low-profile solitaire under three millimeters normally needs no adjustment. Where a design sits outside that range, we confirm the recommendation with the factory before the specification is locked.
Planning a surprise
Borrow a ring from the correct finger, ask someone trusted, or choose an estimated size and review the resizing terms before purchase.
If the size is a genuine unknown, a classic solitaire in a common size is the safer choice. Plain and lightly set bands are the simplest to adjust afterwards.