Azsharite

Azsharite is an extremely rare mineral harvested ONLY in the Kaldorei cursed lands of Azshara. This crystalline maternal is capable of focusing and containing arcane magics of immense power along with the entire souls of demons and other sentient creatures.

The mineral is ideal for the creation of Soulstones and weapons of great fel power. It is highly prized by Demon Hunters in the creation of ritual binding daggers and their own demonically charged iconic warglaives.

Azsharite comes from mountain giants, that feast upon stone and other organic materials. The the crystal is formed within their digestive system over decades upon decades before it is 'secreted' upon the earth for harvesting. It is rumored that those with a magical sensitivity can find where these deposits are under the earth that are not directly seen upon the surface. Demon Hunters often employ the use of Felhounds to scour Azshara to find this precious mineral for their own purposes, it is HIGHLY prized by the Illidari and other followers of the Dark path.

All attempts to expedite this lengthy natural digestive manufacturing process for profit has failed, it's formation must happen naturally and thus as a result Azsharite continues to be among the most rarest minerals on Azeroth.

Source:

http://www.wowhead.com/quest=3602/azsharite