If you don’t know your exact size yet, you can use a simple method:
Wrap a string around the second phalanx, at the widest point of your finger. The string should not be too tight or too loose. Mark with a line where the string meets. Finally, unwind your string and measure with a millimeter ruler the length necessary to go around your finger. This distance in mm corresponds to your finger circumference. You can also use a strip of paper one cm thick.
Edge is bold. Edge likes to provoke. To play with the lines. Edge takes liberties, making the rules move, and the stones too… Set on the edge of the tubes, they are read upside down, as close as possible to the skin, avoiding the obvious.