Crypt Keys grant access to the Crypts of the Circade, where sarcophagi have a 50% chance to drop Gossamer Quartz. They are rare themselves, so use them efficiently.

Tool · Common

Thunderstone

How to Get · 2 Ways to Farm Thunderstone

Farm tips below are community-sourced and not yet verified in-game.

Route A · Best farm

Hark, the Collector operation reward — complete the Collector operation chain; not a world-boss farm item.

Route B · Source

Operation: Hark, the Collector

A quest item used to destroy Ode'n Bisulcam units under specific circumstances.

Tool comparison

Side-by-side view of items in the same category — compare rarity and primary sources.

Item	Rarity	Primary source	Farm guide
ThunderstoneThis page	Common	Operation: Hark, the Collector	Yes
Crypt Key	Rare	Foe: Bisculam	Yes
Arrows	Common	Vendor: Avakot merchant	Yes
Cage Key	Common	Quest: Orengall pups rescue	Yes
Kearnhold Key	Common	Foe: Banneret Anara	Yes
Mirifuir Key	Common	Siege: Mirifuir Siege	Yes
Pensive's Quill	Common	Quest: College of Pensives	Yes
Sap Tap	Common	Quest: Wevetwood / Poppet storyline	Yes
Synsylk Grappler	Common	Foe: Sinecure soldiers	Yes

Frequently Asked Questions

What is Gossamer Quartz used for?

What is Moranite used for?

What are Crypt Keys?

What is Sappheline used for?

What are Agaric Mushrooms?

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