I am so sorry this happened to you.
If the quilt was on the bed, they did not even see the true value.
They probably used it to gather up all your other items taken from your home. We had the same thing happen at our house.
numerous guys came in according to the police. They through things on sheets and stuffed pillow cases with our jewelry, cameras, cash, antiques etc. The reason we know this is becuase thank God, one of them dropped a pillowcase with our wedding rings and other jewelry it in as they ran from the house. My hear goes out to you. Just an FYI take your time replacing any stolen items. Our theives tried a second break in a few months later. Our neighbor stopped the breakin. The police told us not to replace any of our things for a while and do not place boxes of newly purchased electronics etc on the curb with the trash. They said to break the boxes down and put them in the trash bags or take them to a recycle center.
Best wishes coming your way
Diana