voila ce que jai trouve sur un forum anglais
Conversion recipies take one thing and either upgrade it, or respawn it with
new modifiers.
3 Runes of the same type ==> 1 Rune of the next higher type
This is a nifty new 1.09 patch recipie. This recipie only works for the
first nine runes - El thru Ort. Three Orts can make one Thul. This recipie
does not work for any higher level of rune.
3 Gems of the same type ==> 1 Gem of the next higher grade
and of the same grade
This is the primary way to upgrade your gems.
3 chipped -> 1 flawed, 3 flawed -> 1 normal . . so on.
3 Perfect Gems + 1 Jewel ==> 1 new Jewel
3 Perfect Gems + 1 Charm ==> 1 new Charm
3 Perfect Gems + Ring ==> Magical Ring
3 Perfect Gems + Amulet ==> Magical Amulet
3 P.Gems + 1 magical item ==> Another magical item of the same type.
All of these recipies are basically the same. 3 Perfect Gems of any stripe
combined with a magical item will spawn a new magical item that has the same
type as the one used. 3 PGems and a ring = a new magic ring, 3 PGems and an
Amulet = a new magic Amulet, so on.
I find these to be a waste of gems. I haven´t received anything good during
transmutations.
3 Amulets ==> 1 Ring
3 Rings ==> 1 Amulet
This is a nice conversion, maybe you´ll get something decent for all those
throwaway rings you pick up. Odds are against it though; it´s theorized that
the level of the item you use affects the max modifiers you can get on the
transmuted item. Better materials for better results.