14K Gold Setting for Diamond~Size 8.5

I’m Unsure What Size Center Stone the Setting Holds. Sorry. It is 14K Yellow Gold w/4 Small Diamonds, Size 8.5. *The Band Broke but Can Be Repaired By a Jeweler That Sizes Rings.* Apparently the “F” on the band is either a mark of the maker or means the gold is considered “fine”. *The Weight is Approximately 2.83 grams According to My Scale but I CANNOT Guarantee Accuracy.*