Is it normal that the hardware of my Cles scratches???

Yes, unfortunately it is normal...

You should see the hardware on my cles...the brass on the ring has chipped and the brass polish on my zipper has peeled off...It's very disappointing but I don't think there is much we can do about it

I just bought a damier azur mini pochette and the zipper on that has started to scratch a little as well, and I have been very gentle with it...

I'm sorry I can't be of more help! I guess the only advice I can offer is be super careful with it and avoid friction with any surface, even jeans!