Signature drop: Mysterious egg (item)

Black stone dragon (Desperate Measures)

Black stone dragon (Desperate Measures) is a level 91 members monster found in Anachronia, with 180,000 life points. It is the top source of Black Stone Dragon's head, Greater Barge ability codex and Dragonfire ash.

“An atrocity of black stone callosity. These powerful dragons came from a dark experiment.”

Level 91MembersAggressiveAttacks with ranged

Updated 9 October 2026. Stats and drops from the RuneScape Wiki's monster and drop data (CC BY-NC-SA 3.0), checked 2026-10-09. Wiki page. Item sprites © Jagex.

Combat stats

Combat level: 91
Life points: 180,000
Combat XP per kill: 4,000
Max hit: 936
Armour: 1,299
Attack style: Ranged
Weakness: None
Immune to: Stuns
Aggressive: Yes
Poisonous: No

Slayer

Slayer level: None needed
Assigned by: Not a Slayer task

Where

Anachronia

Ironman notes

Immune to stuns.
Aggressive: it attacks on sight, which is handy for AFK kills once your gear outclasses it.
Drops green charm, blue charm and gold charms for Summoning pouches.
Always drops Reinforced dragon bones: Prayer XP as you go.
It can also roll the shared rare drop table (gems, key halves and bulk supplies); luck items improve those odds.

Best for

Best drop rate anywhere

Of every monster that drops these, this one gives the most per kill.

Easiest monster for

The lowest-level monster that drops these, if the best one is out of reach.

Uncut onyx20/1,000

Drops (36)

Item	Quantity	Rarity
Dungeoneering tokenBest rate	5000	Always
Coins	100–1000	1/2.37
Uncut diamond#2 rate	10–20 (noted)	480/1,000
Onyx bolt tips	50–75	60/1,000
Draconic energyBest rate	4–8	505/1,000
Hydrix bolt tips	50–75	40/1,000
Uncut dragonstone	1–10 (noted)	300/1,000
Reinforced dragon bonesBest rateEasiest	1	Always
Green charm	1	320/1,000
Laboratory relic (common)	1	1/3.46
Blue charm	1	255/1,000
Onyx dust	10–14	1/114
Perfect gemstone scalesBest rateEasiest	1	100/1,000
Gold charm	1	93.7/1,000
Laboratory relic (uncommon)	1	1/20.3
Black Stone Dragon's headBest rateEasiest	1	1/50
Uncut onyxEasiest	1	20/1,000
Greater Barge ability codexBest rateEasiest	1	1/83
Dragonfire ashBest rate	1	1/156
Starved ancient effigy	1	1/180
Raw swordfish	1	1/200
Logs	1	1/250
Sealed clue scroll (elite)	1	1/253
Inert black stone crystalBest rateEasiest	1	1/300
Spirit sapphire#2 rate	1	5/2,000
Draconic visage#2 rate	1	1/455
Laboratory relic (rare)	1	1/588
Spirit emerald#2 rate	1	3/2,000
Glaiven wing-tip#3 rate	1	1/833
Spirit ruby#2 rate	1	2/2,000
Prayer potion (1)	1	1/2,000
Weapon poison++ (1)	1	1/2,000
Mimic kill tokenBest rate	1	1/7,500
Sealed clue scroll (master)	1	1/25,000
Mysterious egg (item)Best rate	1	1/312,500
Lucky dragonkin coin	1	1/1,250,000

Most common first. “Best rate” and “#2/#3 rate” compare expected drops per kill with every other monster that drops the item. Rare drop table items are not repeated here.