Gemstones, Jewelry, and League of Legends.

So like.... I've been a League player for a good few years, and have also had a vast interest in gemstones and jewelry for several years beyond that. I am just starting to open up into pursuing gold and silversmithing as well the fabrication and repairs of pretty much any sort of jewelry or piece of physical art. What I am looking to find out... 1. Are there any copyright restrictions if I were to fabricate a few LoL related pieces to sell off? 2. Where and who should I ask for such regarding permission or potential collaborations?

Just made my little business public several months back, and after a rough few weeks, figured I should take the risk to come to you guys and see how much interest might pop up. I'll give a link to my wares and information once a Riot staffer gives me the ok to, as I do not want to advertise like a shameless whore without permission.

(All was copy pasted from my previous post in the Miscellaneous board. Jewelry and metalcrafting is still an art, just did not know where such questions would be best placed.)