|Release date||27 June, 2005 (Update)|
|Quest item?||Recruitment Drive|
|Alchemy||Cannot be alchemised|
|Store price||Not sold|
|A vial of something labelled 'Gypsum'.|
Gypsum is a chemical that is obtained by searching cupboards during the Miss Cheevers part of the Recruitment Drive quest. It is used on a vial of liquid to create an imprint of the key needed to pass the challenge room.