One clue might be How long ago did you get this? You know, fabric lines are seldom available very long after they hit the stores and since it was "a fat quarter" it makes me think this was the end of a bolt and/or a "close out". It also looks heavier than most. I think I read that you are not looking for an exact match so I'd go with taking a piece you hope to come close to, to a local LQS and ask them what to do? Perhaps the store where you originally bought the fat quarter?