Chalcedony

Source
Mined from:
 * Titanium Vein
 * Cobalt Deposit
 * Rich Cobalt Deposit
 * Saronite Deposit
 * Rich Saronite Deposit

Prospected from:
 * Cobalt Ore
 * Saronite Ore

As a quest objective
This item is required for the following quests:
 * Finish the Shipment
 * Necklace Repair
 * Shipment: Glowing Ivory Figurine
 * Shipment: Intricate Bone Figurine

As an ingredient
Chalcedony is used in the following recipes:

Alchemy

 * Transmute: Skyflare Diamond

Jewelcrafting

 * Crystal Chalcedony Amulet
 * Blood Sun Necklace
 * Icy Prism