What I did was get the ring sized so that it was comfortable and then I had two gold "balls" secured on the inside of the ring where it would grasp the skin on the bottom of my finger. The two balls were like a loose clamp. My ring stayed put and I could easily remove the ring when needed. A jeweler would know what you are talking about if you ask to have balls placed on the inside of your ring to keep it from slipping.
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