order of value power for charms: 
Uru (green, weak) 
Ser (blue, better) 
Min (red, medium) 
Pag (silver, large) 
Yit ( gold, the best) 
Effects: 
Umn => vitality (20, 40, 60, 80, 100) 
Iceri => mana (20, 40, 60, 80, 100) 
Joph => agility (1, 2 , 3, 4, 5) 
Koor => intelligence (1, 2 , 3, 4, 5) 
Vorr => constitution (1, 2 , 3, 4, 5) 
Isos => Durability (of item/weapon)(5, 10, 15, 20, 25) 
Zand => Survival (1, 2 , 3, 4, 5) 
Ook => regeneration (1, 2 , 3, 4, 5) 
Ydra => strength (1, 2 , 3, 4, 5) 
Ustr => evasion (1, 2 , 3, 4, 5) 
First syllable gives the power, 2nd syllable the stats it will change. 
So, a Uru-Zand gives 1 in survival as an example