Wheel of the Black March:

Bring 6 Large Brilliant Shards and 25 Dark Iron Ore to Gorzeeki in the Burning Steppes.

A Wheel of the Black March contains and directs the violent energies required for the Circle of Greater Summoning. For Gozeeki to construct a wheel, he will need both large brilliant shards from an enchanter, and dark iron ore from a master miner.

Acquire these and bring them to my servant.

The Wheel of the Black March isn't easy to make, and takes a lot of materials. Have you gathered them yet?

There they are! I hear that dark iron ore is only found in the depths of Blackrock, and I'm sure these shards weren't easy to find either. I am often awed at the dedication you warlocks have. If you instead bent all that energy into the art of bug catching, oh... such a feast you would enjoy!

Sorry, a small digression. I'll create the wheel and keep it for you until you're ready for your ritual.