Well, generally speaking, I will not suggest you remove the scratches on the sunglasses by yourself, for the lenses of the Gucci sunglasses are special material. If you are not professional, it is possible to destroy them. Anyway, you are not supposed to remove the scratches by yourself. Besides, Gucci Sunglasses are very famous all around the world because of their perfect design. And you can have ones, because they are one of the brands which can give you a perfect vision and fashionable image. To buy real ones, you can check for a warranty manufacture card. Authentic Gucci sunglasses always come with it and it has the serial number printed on the card. Anyway, just take them to the official stores, so that they can repair for you.
When there are the scratches in the sunglasses, there is no good way to get rid of it. You could change the coating part of the gucci sunglasses in the gucci real store where you buy it. However, you should use the toothbrush to clean it which could just make it serious.