Hello Joanna, how lovely is Ireland! I totally understand your frustration, because my daughter has used anodized aluminum rings for some of her chain maille designs.
Aluminum is a very soft metal and next to impossible to harden, so tool marks are going to happen! While working with this pretty wire as well as colored craft wire, it is important to be firm and confident with every tool move.
Sometimes folding a piece of lint free-material (such as a piece of cotton t-shirt) or a polishing cloth over the wire while you work will help avoid dents and the removal of the color coating.
When using colored copper craft wire, some people enjoy using nylon jaw pliers as the jaws will not nick the wire when making 90° bends.
After finishing a piece, some people use nail polish to repair color chips and bad scratches. My favorite protective product is the Krylon Crystal Clear Acrylic Spray. For details about this product, please refer to Seashell Jewelry
. Just remember to educate your customers about the products you use and that all protectants are temporary.
Answer contributed by Dale "Cougar" Armstrong