Uncut diamond

Ironman verdict

At least 9 monsters drop it. The easiest is Cockroach drone (level 4, 1/1,365.33); the best rate is Living rock patriarch (level 95), at Always, about 8 per kill. You can also make it yourself: it takes 42 Divination and gives 9.1 Divination XP, using 2 × Sparkling energy and 3 × Uncut ruby. Other sources include Gnome Restaurant, Casket, Ice troll grunt and Ice troll female, plus 4 more listed below. Making ten takes 20 × Sparkling energy and 30 × Uncut ruby and gives 91 Divination XP. Reaching level 42 Divination takes 45,529 XP in total; the Divination calculator counts the actions and materials to any target, and the Divination guide has the Ironman training route. 2 recipes use Uncut diamond, including Diamond and Uncut dragonstone. Uncut diamond is available on free-to-play worlds too. 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 120 coins, which is 80 less than the shop price, so buying it to alch does not pay.