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Onyx dragons are high-level Slayer monsters, released on 3 April 2017. They are part of the gemstone dragon group, and are the second strongest dragon of this type. They require the player to have 98 Slayer in order to kill them.

A total of six onyx dragons are located in the gemstone cavern under the Shilo Village mining site. They require the completion of the Hard Karamja Tasks in order to access them in the gem rock cavern underneath. In order to pass the barrier to confront them, players are also required to sacrifice a number of uncut dragonstone, uncut onyx, or uncut hydrix gems - with each gem type allowing the player to kill a certain number of dragons within their respective chamber; up to a limit of storing 60,000 kills at a time.

If the player is on a Slayer task for onyx dragons, however, they may enter the onyx dragon area without the need for charges, and, if the player has already donated gems for charges, the charges will not be consumed while on-task.

Entrance fee to killing onyx dragons
Uncut gem Kills per gem Cost per kill
Uncut dragonstone Uncut dragonstone 2 5,949
Uncut onyx Uncut onyx 400 5,028
Incomplete hydrix Incomplete hydrix 4000 5,480


Onyx dragons attack primarily with magic, although they will use both magic and melee if within melee range in addition to the regular dragonfire attack.

Onyx dragons will periodically use their special attack which steals some of the player's life points. While healing the dragon for 5,000 life points. This can be avoided by moving away from the black spikes that come towards the player as a ripple effect, when they reach the player's location they will emerge as a 3 by 3 area of effect attack (AoE) and can be avoided completely by moving out of that area.


100% dropEdit

Item Quantity Rarity GE price
Hardened dragon bonesHardened dragon bones1Always7,379


No charmGold charmGreen charmCrimson charmBlue charm
Represents a 90% confidence range based on a sample of 228 kills.
3 charms are dropped at a time.
Add data to the log (requires JavaScript).

Main dropsEdit

Monster often drops two from this table.

Item Quantity Rarity GE price
Ring of lifeRing of life1Uncommon2,663
Gold oreGold ore25–30 (noted)Uncommon4,525–5,430
OnyxOnyx1Very rare2,017,416
SapphireSapphire5–7 (noted)Common1,645–2,303
Onyx bolt tips 5Onyx bolt tips1Common6,726
Runite bolts 5Runite bolts6Common4,662
Ring of duelling (8)Ring of duelling (8)2Common3,562
Coins 1000Coins1,500–3,000Common1,500–3,000
Ruby bolt tips 5Ruby bolt tips48–60Common2,256–2,820
Dragonstone ringDragonstone ring1–2Common9,000–18,000
Gemstone helmGemstone helm1Very rare7,718,571
Gemstone greavesGemstone greaves1Very rare13,017,268
Draconic visageDraconic visage1Rare1,184,149

Tertiary DropsEdit

Item Quantity Rarity GE price
Clue scroll (hard)Clue scroll (hard)1RareNot sold

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