Be aware that a printed “cut out of paper ring sizer” such as on this picture below is not reliable!
Good to know: the difference in diameter between one size to another is less than 1/3 mm. = 0.32 mm. Check sizing by your local jeweler. It is safest!
Measure your ring size in seconds
ring size chart for male and female
free paper printable online ring sizer
Measure the exact ring size with this Precision Ring Size Chart: Consult the user manual Ring size measurements for USA, Europe, UK, British, Britain, Japan and international, offered for free by
Ajediam your Trusty Diamond Company in Antwerp World Diamond Center.
Ring size user manual
To measure ring size adapted to your finger size print this free universal Ring Size Chart
Approximate exact visual and printed ring size chart by screen size 1280 x 800 pixels!
Put a ring that fits on your finger over the printed ring gauge and measure the inside of your ring with the outside of the printed size. When it match together than you have found your ring size.
Measure the exact ring size in the right conditions:
At noon - Midday is the most frequent temperature and moisture of your region. *Fingers will swell more in the evening than in the morning. They will also be thicker in summer than in winter. Heat makes fingers thicker. Cold makes fingers thinner.
*Be sure! The difference in diameter between one size and another is less than 0,32 mm.!
The wrong measurement can cause easily the loss of your precious ring or, when the ring is to small, it hurt or you cannot put the ring on your finger!
Inside of ring must match outside drawing
Do you have a personal ring in mind? Email me
How to measure the size of a mounted diamond in settings, rings and jewelry:
When a diamond is fixed in a ring or setting you can estimate the diameter between the prongs on opposite sides of a stone
With a professional measuring tool, gauge estimator or a brass calipers
you will find the size / dimensions of set / mounted diamonds, the inside and outside diameter, depth + thickness.
The diamond size is the key to estimate the carat weight of diamonds.
To estimate the diameter in a closed setting and the carat weight of
ancy shaped diamonds we advice to go to a professional jeweler.
Leveridge, tool to measure
the size of set diamonds
Brass callipers instrument
to measure the size of set diamonds
You can buy it at about +- US $ 7
or you have it already in your toolbox
Email Tel: +32 3 233 29 90
Antwerp World Diamond Center, Diamond Exchange, Hoveniersstraat 2, Antwerp / Belgium / Europe
This page was last updated on: March 23, 2015
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