Weddingbee boards

OKay so after some research this is an article I found and this is what they said.

The big knuckles require fairly large size ring to pass trough and end up on the following thinner part of the finger where it is hopelessly loose. The full spring is the best solution of this problem.

The full spring is a strip of special gold alloy fitted inside the shank of the ring which is expanding while passing the knuckle an then contracts back," hugging" the thinner part of the finger and keeping the ring in place. While full spring takes about of the inner circumference of the shank, half spring goes halfway. Full springs are surprisingly comfortable and effective and yet seldom used. Unfortunately they can't be implemented on any design especially the very delicate ones. Another draw back is that fitting a spring requires some time and skill and the jeweler will be happy if he can skip it. Large number of inexperienced goldsmiths and designers does not even know about it. In my opinion full spring is a must for heavy rings with high standing large stones. If fitting full or half spring is not a viable option, soldering two small (about 1.5 mm gold beads inside the ring at 4 and 8 o'clock position will significantly reduce the swivel and self position the ring. The initial discomfort one might feel because of the two little beads inside the ring usually disappears after 2-3 days of wearing.

http://searchwarp.com/swa473305-How-To-Avoid-Incorrect-Ring-Size-And-Uncomfortable-Fit-Precious-Tips-Art-1.htm