Bleached Shell

Sell value

 * 25 Gold

What drops it

 * Sand Wurm (Crystal Desert)
 * Siege Wurm (Dunes of Despair)

What it salvages into

 * 5 Shells

Armor Collectors

 * Ardenoth Oakenshield (Amnoon Oasis)

Weapon and Charm Collectors

 * Lord Dorn Lendrigen (The Scar)