Marvon Rivetseeker in Tanaris wants you to collect 30 Gahz'ridian Ornaments.
<name>, I'm a scientist, but also a treasure hunter at heart!
Long ago, when trolls used to occupy this land, they created large amounts of ornaments modeled after Gahz'rilla, a hydra they worshipped as a deity. These ornaments are carved out of an element that I call "Gahz'ridian," after the hydra god.
I did find some myself, but I'd like to have some more to study -- maybe you can find some?
I even invented a detector that makes finding the Gahz'ridian a snap! Just put it on, and the search begins!
Are you having any trouble?
You can find Gahz'ridian just about anywhere in Tanaris, <name>, so keep looking!
Perfect; these ornaments are perfect for my studies. Thanks so much for the help, <name>.
Oh, can I get my helmet back?
Gahz'ridian ornaments can be found all over the desert, but they are particularly concentrated around Broken Pillar, Eastmoon Ruins and Southmoon Ruins.