Vintage gold filled rings (won’t tarnish) with Ruby gemstones 

Ruby square ring: size 7

Ruby heart ring: size 8.5

You can measure your ring size using something like a string, floss, or a small strip of paper. Take one of these measurement tools and wrap it around the base of your finger, marking where the string or floss first overlaps, with a pen. Then, line that up with a ruler or measuring tape and take down its length in millimeters. Use the chart above to see which size is right for you.