[Highland Park] Lost ring

I need your help! While walking a dog along N.Highland Avenue today towards the park, my engagement ring somehow slipped off of my finger. I was on the sidewalk, and lost it somewhere between Jackson and a little ways past Browning. It is not a very valuable ring, in a monetary sense, but it has been in my fiance's family for over sixty years. I am heartbroken, and hoping that if anyone finds it, will return it to me for a $100 reward. I traced my steps for nearly two hours today, with no luck. If anyone happens to be out walking and would keep their eyes open, or has already found it, please, please, please, contact me as soon as possible. Thank you, Jennifer