Well, first of all, I\'d like to add that a Jeweller doesn\'t necessarily know about magic, nor does he know about enchantments of items. Which results in that he might not know how to enchant an item, as enchanting item is magic, not jewelling. Or to put it in a more simple and easily understandable way. If all jeweller items are enchanted automatically, they will be useless, cheap and not worth making, thus making the market flooded with cheap, worthless items. Exactly what noone wants in this game.
I agree a jeweler doesn?t necessarily know about magic - that would make him a magician.

What I was suggesting was that some jewels have inherent powers that enhance your attributes. You could carry the gem around in your pocket and get the same bonuses. A ring is just a more convenient and maybe pretentious way of displaying your wealth. And yes, no one wants the world flooded with items worthless or otherwise. But you?re assuming that these gems will be common. I imagine that the devs can make jewels very rare if we wish. Not like the crystal factories that exist in the current game, rather say a rate of like one gem per week or month. That way every player has a rare chance of finding a potentially powerful item.
As for the other thing you wrote, well... Who says there is a \"max skill\"? You shouldn\'t jump to conclusions based on what happens in other games. This isn\'t other games at all, and you\'ll realise that once things start getting uncovered.
I do hope there is no max skill, I meant that at some point there will be some sort of diminished returns on skills. You can?t keep making swords twice as good as someone with half your skills, at some point I think it gets silly. But at least we do agree on one thing - that this isn?t like any other game!
I agree with cirdan, lots and lots of gems would be cool. Since this is a crystal world there should be many more types then there are on Earth. Maybe some gems have detrimental effects, while most may have no effects or only effect charisma.
A general description including color, opaqueness, hardness, etc. as well as the effects can be used to define the various types. Include some history and we can create some decent gems for use in game. Please post your suggestions!