Old School RuneScape Wiki

Superglass Make turns all sand and soda ash, seaweed, giant seaweed, or swamp weed into molten glass instantly and without the need for a furnace. All items are converted and you have a chance to receive extra molten glass. On average, you will receive 1.3 Molten Glass per pair of raw materials. If using giant seaweed, you will receive on average 9.6 Molten Glass per seaweed. You also receive 10 Crafting experience (60 if using giant seaweed) per pair of items, up to a maximum of 180 crafting experience per cast. As with all Lunar spells, the quest Lunar Diplomacy must be completed to cast this spell. With good timing and concentration, a player can expect over 50k Crafting and 30k Magic experience per hour, although it is possible to gain over 75k Crafting and 40k Magic experience per hour. A smoke battlestaff (or a tome of fire and staff of air) is recommended for players planning to cast this spell a lot, as it provides an infinite amount of fire and air runes.

Using seaweed and a smoke battlestaff or equivalent would provide a profit of 632.3 coins per cast with an inventory of 13 seaweed and 13 buckets of sand.

Using swamp weed would provide a profit of −1,083.7 coins per cast with an inventory of 13 seaweed and 13 buckets of sand.

Using giant seaweed would provide a profit of 1,006 coins per cast with an inventory of 3 seaweed and 18 buckets of sand. Molten glass that would go over the 28 slot inventory will be placed on the ground and need to be picked up to achieve the appropriate profit.

Remember, you cannot use normal Magic or Ancient Magicks spells if you are using Lunar spells, except by use of the Spell Book Swap spell.


Spell cost
10Air rune.png6Fire rune.png2Astral rune.png398
Combo runes
6Fire rune.png2Astral rune.png10Dust rune.png388
10Air rune.png2Astral rune.png6Lava rune.png392
2Astral rune.png10Smoke rune.png1,028
10Air rune.png2Astral rune.png6Steam rune.png776
6Fire rune.png2Astral rune.png10Mist rune.png1,968
6Fire rune.png2Astral rune.pngStaff of air.png348
6Fire rune.png2Astral rune.pngMist battlestaff.png348
6Fire rune.png2Astral rune.pngDust battlestaff.png348
10Air rune.png2Astral rune.pngTome of fire.png368
2Astral rune.pngStaff of air.pngTome of fire.png318
10Air rune.png2Astral rune.pngLava battlestaff.png368
10Air rune.png2Astral rune.pngSteam battlestaff.png368
2Astral rune.pngMist battlestaff.pngTome of fire.png318
2Astral rune.pngDust battlestaff.pngTome of fire.png318
10Air rune.png2Astral rune.pngStaff of fire.png368
2Astral rune.pngSmoke battlestaff.png318