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How to measure your ring size

You can use our Ring Size Guide to obtain an accurate measurementDownload Size Chart                               

Let's get started with some TIPS

Temperature is important

Don't measure when your body temperature is either too cold or too hot. A cold finger shrinks while a hot finger expands causing an inaccurate reading. Only measure when fingers are at room temperature.

When two sizes seem to fit

If you hesitate between two sizes, always go with the larger one.

A wider band needs a bigger size

If you consider purchasing a wide band, move up a size from your measurement, for comfort’s sake.

Don't use strings

When measuring your finger, always refrain from using a string, they tend to stretch, which can result in wrong size. ALWAYS use a paper strip about 1/2 width."

Big knuckles can affect your size

If your knuckle is a lot larger than the base of your finger, and you're using the virtual ruler, measure both the base of your finger and your knuckle and select a size in between the two.

For best results, use a plain band

Extra wide band styles tend to run slightly small. If your borrowed ring has a narrower shaft than the one you wish to purchase, you may wish to order a ring a size larger than the normal size worn. Also, large stone rings may cause the shank to lift up when laid on its side on the display, slightly distorting the size measurements.

Measuring Your Finger

Your ring should fit your finger comfortably;

Snug enough so that it will not fall off, but loose enough to slide over your knuckle.

Finger size changes depending on the time of day and the weather. For best results measure your finger size:

  • At the end of the day and when your fingers are warm (Fingers are smaller in the early morning and when cold.)
  • Measure finger size 3 to 4 times to eliminate an erroneous reading.

Ring Sizes in the UK and Ireland

Women’s rings typically range from size G to R. The most commonly purchased women’s ring sizes at ZAFF Jewellery range from size K to O. Size M is the most popular ring size.Men’s rings typically range from size P to Z. The most commonly purchased men’s ring sizes at ZAFF Jewellery range from size R to U. Size T is the most popular ring size.

Free Resizing

It’s a good idea to know what your ring size is before you buy a ring.

But we know that’s not always possible, especially if you’re buying it for someone else.

ZAFF Jewellery provides complimentary resizing for bespoke designs and Diamond rings when within the recommended sizing range, during the first 2 months.

Simply contact us to arrange for your free resize.

You will be responsible for the cost of returning the product, according to our return policyDiamond and gemstone eternity rings with a specific number of gemstones per finger size; migraine or ornate bands cannot be resized.

We are happy to exchange your ring for another size within 30 days of purchase.

It is important to note that should you opt for an exchange, your new ring may contain fewer or more gemstones, diamonds, or a reduction or increase in precious metal weight which may cause an increase or decrease in the price.

International Size Conversion

If ordering from outside of another European country, determine your ring size according to your country’s standard.

Then use the International Ring Size Chart to convert to the corresponding UK ring size to place your order.

We use UK ring sizing measuring rings from A (the smallest) to Z.

Half sizes are also available to help you find the perfect fit.

A ring with a deep band width will need to be slightly larger than your normal size, so keep this in mind when choosing your ring.


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We ship your order with a next day signed delivery, upon completion of the production process


We offer personal delivery service for orders over £4000 for your peace of mind