Jcrew wool/cotton sweater blazer

Grey wool/cotton blazer form Jcrew! Purchased 2 years ago and wore 3-4x. I have another one in navy— it’s such a staple. There is one tiny stain on the inside of the opening. It’s not visible from the outside. I haven’t tried washing it out because I wanted to get it dry cleaned— likely will come right out. Size XS