Squeeze juice from lemon and orange in a bowl, put aside. Remove any seeds, slice rinds into very thin slices.
Place rinds in a stainless steel pot with water and cinnamon, bring to a boil over high heat, reduce heat cover and boil for about 25 minutes or until rinds are soft and tender, when done remove cinnamon stick.
Prepare and sterilize your jars, and lids.
Add blueberries and reserved juice cover and boil for 10 to 15 minutes, add sugar, bring to a rapid boil, uncovered until mixture forms a gel. Stir frequently. Remove from heat.
Ladle into sterilized jars leaving a ½ inch headspace, remove and process in water bath for 10 minutes.
This recipe made 5 half pint jars.