Tellas

A metallic substance derived from dragon scales, strengthened each time a dragon forges. Tellas of fifth rank (forging) is more valuable than any other metal. Harvested from molting dragons, it's said that the Runenos tomb holds the greatest concentration of tellas. Tellas is graded by forging amount, and anything above seventh forge is considered of divine class and as such is priceless and virtually indestructible.