RuneScape Wiki
This article is about the crystal flask used to make combination potions. For regular flasks, see Potion flask.

Crystal flask detail.png

The crystal flask is a special type of Herblore equipment that is made from crystal glass. Crystal-flecked sandstone is required to make the crystal glass. It is used to make combination potions.

Crystal flasks can only be created after completing the quest Plague's End as the crystal-flecked sandstone mine becomes accessible after completion of the quest. The mine can be found in the Ithell district of Prifddinas. The quest As a First Resort is required to use the machine to create the crystal glass.

Crafting 100 crystal flasks unlocks the title [Name] of the Ithell.

Crystals flasks are made by using a glassblowing pipe with crystal glass (or simply by left-clicking the crystal glass if a glassblowing pipe is already on the player's tool belt), yielding 150 Crafting experience and requiring 89 Crafting. While the Voice of Seren is active in the Ithell district, creating a crystal flask when standing in the Ithell district yields 180 Crafting experience. Players may boost their level if below 89. This cannot be assisted. Combination potions that have a sip taken out of them cannot be traded on the Grand Exchange. The potion can still be traded to other players.

Assuming a player mines the daily maximum of crystal-flecked sandstone, they will gain a minimum of 7,500 crafting experience each day (9000 with voice active) crafting them into flasks.

If the resourceful aura is used and the sandstone mine in the Edimmu dungeon is mined as well, an average of about 82 flasks can be made per day giving 12,300 - 14,760 Crafting experience.

Similar to vials and potion flasks, crystal flasks of identical potions can be decanted together to produce a flask with doses equal to the sum of the doses the flasks contained, up to six doses per flask. Teplin Macagan can assist with decanting large numbers of flasks, even in noted form.


Crystal flask.png Crystal flask
Crafting-Make-X GE icon.png
150 XP-3,556
Crafting Crafting level89
Quests Completed Plague's End
P2P icon.png Members onlyYes
Crystal glass.pngCrystal glass1N/A-


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