Diamonds Done Differently

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Ring Size Guide

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international table of ring size and measurements

Still Unsure? Let Us Send the Perfect Fit to Your Door

If cross-referencing charts feels a little too much like a high school maths equation, don’t stress. We want your MOHSTEN ring to slide on smoothly and sit perfectly from day one.

We offer complimentary physical ring multi-sizer kits shipped straight to your home, complete with straightforward, step-by-step instructions.

Measuring for Your Ring: Inside Circumference vs. Inside Diameter

  • Precise Physical Measurements: The table provides the internal dimensions of the ring, crucial for finding a comfortable fit:circumference (mm): The distance all the way around the inside of the ring. A full circular icon clarifies this measurement.diameter (mm): The distance straight across the widest part of the inside of the ring. An icon with a straight line through a circle clarifies this measurement.

Why Precision Matters: Even a slight difference can affect how a ring sits. This chart provides decimal-place accuracy (e.g., US size 6 equates to an internal circumference of exactly 50.58 mm) for a truly curated fit.

Understanding these two key dimensions is fundamental to using our guide effectively.

  • Inside Circumference (Icon: full circle): This represents the total distance around the inside of a ring. When you measure your finger directly with a string or a tape measure, you are measuring the circumference. Use this measurement in the "circumference (mm)" column.
  • Inside Diameter (Icon: straight line through circle): This represents the width across the inside of a ring. This measurement is best used when you measure an existing ring that fits you perfectly. Use this measurement in the "diameter (mm)" column.

Pro-Tip: Measuring an existing ring (diameter) is often the most accurate method if you already have a ring that fits well. Be sure to measure from the inside edge only.

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MOHSTEN Expert Tips for a Perfect Fit

Beyond just the chart, consider these expert fitment factors for ultimate comfort:

  • A Wider Band Feels Tighter: If you are purchasing a ring with a very wide band (e.g., over 5mm), it will feel slightly tighter on your finger. We often recommend ordering a half-size larger than your standard size for wider designs.
  • Stacking Matters: When stacking multiple rings, they collectively form a wider band, which can also make them feel tighter. Think about your complete curated look.
  • Measure at the Right Time: Fingers can swell due to temperature, activity, or time of day. For the best result, measure your finger at least three different times of day to find an average, comfortable size. Avoid measuring when your hands are extremely cold.
  • We Offer Custom Sizes: Can't find your exact size in the chart? Our bespoke creation services mean we can craft rings in any increment for a truly made-to-measure piece.