Uncut moonstone

Ironman verdict

3 monsters drop it. The easiest is Vermyx, Brood Mother (level 720, 15/1,000); the best rate is Nakatra, Devourer Eternal (level 2,160), at 15/1,000, about one every 17 kills. You can also make it yourself: it takes 91 Divination and gives 21.2 Divination XP, using 250 × Luminous energy and 100 × Moonstone dust. Other sources include Ghost impling, Ghost impling jar, Shambling horror and Sparkling glyph, plus 4 more listed below. Making ten takes 2,500 × Luminous energy and 1,000 × Moonstone dust and gives 212 Divination XP. Reaching level 91 Divination takes 5,902,831 XP in total; the Divination calculator counts the actions and materials to any target, and the Divination guide has the Ironman training route. One recipe uses Uncut moonstone: Moonstone. It also comes from the Thalmund’s Wares (weekly) routine. Uncut moonstone is members-only. It is tradeable on normal accounts, but an Ironman cannot use the Grand Exchange or trade for it, so the sources on this page are the whole list. High Alchemy turns one into 2,400 coins, which is 1,600 less than the shop price, so buying it to alch does not pay.