Making Skills necklace (Cosmic rune, Earth rune, Water rune)

Making Skills necklace (Cosmic rune, Earth rune, Water rune) in OSRS: 1 × Dragon necklace, 1 × Cosmic rune, 15 × Earth rune, 15 × Water rune → 1 × Skills necklace. Profit right now: +891 gp after GE tax (input cost 10,860 gp).