Molten glass (giant seaweed)
CraftingSuperglass Make: 1 giant seaweed counts as 6 seaweed and takes 6 buckets of sand; the spell gives 10 Crafting XP per bucket of sand (60 per giant seaweed) and averages 1.45 molten glass per sand (8.7 per giant seaweed; 1.6 per sand, 9.6, if you pick up the excess glass), per the wiki. Each cast takes 3 giant seaweed and 2 astral runes (air and fire from a staff), and gives 78 Magic XP. Adjust the rate to your method.
Fill a target level to plan the whole grind, or leave it blank to use the hours above.
Crafting XP / hr72,000
Profit / hr619.4k
GP / XP+8.60
In 1 hour
Giant seaweeds1,200
Crafting XP72,000
Profit619.4k
Materials
 Giant seaweed | 1,200 | 29 | -34.8k |
 Bucket of sand | 7,200 | 8 | -57.6k |
 Astral rune | 800 | 102 | -81.6k |
Produces (expected)
Value: 793,440
Rates are per hour; totals are for the basis above. Prices are live from the Grand Exchange.
Game data on this page comes from the OSRS Wiki: Molten glass, used under CC BY-NC-SA 3.0.