I want to purchase a cartier love wedding band, I have a trinity band that does not fit right and I need help with sizing. I normally wear a size 9 but I ordered a size 61 in the trinity medium size, needless to say its too big. The band I am looking at is 4mm wide and I am not sure if I should order a size 60 or 59. Looking at a conversion chart it would be a 59. I am so confused at this point. Please help