You'll have to measure either your finger circumference in the part that the ring is designated to be or the inside diameter of a ring that you already have and fits well.
|Ring Size||Inside Circumference||Inside Diameter|
|8||2.24" / 57mm||0.716“ / 18.19mm|
|9||2.34" / 59.5mm||0.748" / 18.89mm|
|10||2.45" / 62.33mm||0.781" / 19.84mm|
|11||2.56" / 64.97mm||0.814" / 20.68mm|
|12||2.66" / 67.51mm||0.846" / 21.49mm|
Look at the chart below and pick the length that you like for your necklace and then order the length that is the closest to your pick.
You'll have to measure your wrist size and then add a little bit so the bracelet will not be too tight on your wrist.