Do you really need it? I have a rule that I always follow when I am out shopping. If you can't think of three ways to wear it, then leave it! Any item that I choose to wear, except for special occasions, I think of three ways to wear it on the spot. Rather if it is casual, business casual, or dressy. This will prevent you from being a compulsive shopper.
Do you have anything similar? If it isn't basic essentials, such as jeans or t-shirts, then you may not need it. If you already have five black blazers, then leave the sixth. I don't care if the pockets have a leather trim on it. The last thing you need is to clutter your closet with more items you already own.