RING SIZE GUIDE

Measuring with the THÉSAURÍ ring sizer

It works much like trying on a belt.

Slide the ring sizer over your finger, past the knuckle.
It should pass over the knuckle with slight resistance: not too loose, not a struggle.
The number you see is your ring size.

What affects ring size

Finger size changes throughout the day. A ring that fits perfectly in the morning may feel looser by evening.
Your dominant hand is usually bigger. Measure both hands to be sure.
Wide bands need more room: wider rings typically need a half to full size up from your usual.
Temperature matters: cold hands are smaller, warm hands slightly bigger. If you’ve just come in from the heat, wait a few minutes before measuring.
The best time to measure is at midday, not first thing in the morning or after a workout.

Other ways to find your ring size

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Using a ring you already own

If you have a ring that fits well, measure it using a ring sizing app, such as Ring Sizer Tool (for iOS).

At a fine jewellery store

At a fine jewellery store, they’ll typically measure your ring size on the spot.

Printable ring sizer or a string

This is the least precise method. We recommend treating it as a rough guide rather than a final decision on size.

Download the printable ring sizer PDF below and print it at 100% scale.
Cut out the measuring strip along the marked line.
Wrap it around your finger where the ring will sit, and slide it past the knuckle.
Read the size where the strip overlaps.
Compare the result with the size chart above.

You can do the same with a non-stretchy string and a ruler: wrap it around your finger, past the knuckle, mark where it overlaps, and measure that length.