Indication that an item is used in a gear set

Is it possible that an item used in a gear set has some sort of indication on it so you know not to sell it

I haven't found any indication too. It will be realy good idea to add such feature.

some sets ive noticed has info on the pop up window for etc 2 pieces = x stat bonus

If you put the item in inventory then go to gear sets - if one has a triangle ! to the right of it then something is missing