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Red sandstone

It can be used to make robust glass.

Access: Members
Trade: Not tradeable

Weight: 0.453
Value: 0
High alchemy: 1
Low alchemy: 1

Used to make

Blessed molten glass

Materials

Makes

Blessed molten glass1

Crafting: Level 50, 350 XP

Furnace

Robust glass

Materials

Red sandstone28

Makes

Robust glass machine, Prifddinas robust glass machine

Completed As a First Resort

Robust glass

Materials

Makes

Crafting: Level 61, 0 XP
Magic: Level 77, 78 XP

Completed Dream Mentor and As a First Resort

Where to get it

Source	Quantity	Chance per roll
Red sandstone (rock) []	1	Always
Water filtration system []	1	Common