Erdur Ore is very rare. It can only been found deep underground, and almost all of it was once mined out by gnomes. Gnomish masters learned to smelt it into a metal to create excellent armor. Ancient recipes and frames for such armor can still be found in Faeo.
 

1-5		11-15
	21		330
	15		100
	3		3
	150		500
	20		80
	7800		59800
	300		1300
AND	3OR		3OR
6-10		16-20
	90		700
	45		250
	3		3
	300		1000
	40		140
	12200		326000
	700		5000
AND	3 OR		3 OR

However, the ore itself is much harder to find. Only shopkeepers Sadok in the Baurvill Hamlet and Armak in the Settlement of Faytir can get it during the “...” event. Merchants managed to establish business relations with a team of miners who stumbled upon an ancient gnomish vault. Now, shopkeepers get batches of this valuable product from them every now and then.
 
Sadok and Armak can trade the ore to adventurers for various quest resources. Besides, you will be able to buy more ore from them by paying in gold or diamonds if you prove your allegiance to the legacy of the gnomish people and acquire the Gnome Guardian's Ring or the Gnome Treasurer's Ring.

Resource:	Reward:	Resource:	Reward:
	500	10	20
	240	10	20
	400	10	20
	120	5	60
2	200		40
	40		320
3	300		100
	28		120
	100		400
10	100		520
	60		640
3	180	25	20
	60	25	20
5	120	25	20
2	200