How to size a ring.
It is not that hard to work out the correct size of a ring for you and there are a couple of different options.
Find a friendly jeweller and ask them to size your finger.
Measure a ring that you already have (or a ring from the person you are buying for)
Cut a piece of paper 1cm wide and 10cm long.
Wrap the paper around the inside of the ring as tightly as you can, mark the place where they overlap.
Measure the distance in mm, this is the inside circumference for your ring
Cut a piece of paper 1cm wide and 10cm long
Place it on the finger you need to be sized and form a ring, make sure that the ring fits snugly and can slide over your knuckle.
Mark the piece of paper where they meet
Measure the distance in mm; this is the inside circumference for your ring
To find Ring size
Compare your measurement to a Ring Chart (inside circumference) and read the number of the ring size of the column.