BOTH RINGS SIZE 8-1/4 will fit 8-1/2 snug.  They are made of 18K heavy gold electroplate, not solid yellow gold. There vintage crafted in the 60's to early 70's. The top of each ring is just under 1" wide. The gems are a little lighter than London blue topaz in color. They are manmade gems. Each is without chips or scratches. Both rings have never been worn and are in very good condition.