dragonglass

Dragonglass is the name for a durable glass-like mineral mined by the masters of Adelphus

Source

Dragonglass appears to be found exclusively in Adelphus.  There is no other known source for dragonglass within the known realms.

Rumors say that dragonglass is made by dragons, while Adelphans say it is mined from the depths of the oceans.

Uses

Dragonglass is used by those with the skill to do so to fabricate weapons.  It is very difficult to forge, but weapons made from dragonglass are highly prized.  It is said that the material takes enchantment well.

Other names

Other terms for Dragonglass include, obsidian, frozen fire, and glassteel. 

dragonglass

The Darkest Days Neilg