Rubium rocks

NormalDepleted

Rubium rocks
Released								19 November 2025 (Update)
Members								Yes
Location								Charred Dungeon
Map icon
Options								None
Examine								A rocky outcrop.
Advanced data
Object ID								58919
Link								MOID

Rubium rocks are rocks found in the Charred Dungeon, requiring level 60 Sailing to access. They can be mined at level 48 Mining to produce stackable rubium splinters and 30 Mining XP.

The rocks yield significantly more experience per hour than the nearby rubium deposits, but comparable rubium splinters, and require much more attention and effort than the deposits.

An ornery dwarf named Kragin mines rubium rocks, moving between them every few seconds or when they are depleted by a player. Kragin does not deplete the rocks.

The following table shows the approximate rates to receive rubium splinters and Mining experience. Mining enhancers and the prospector kit can increase the numbers beyond what is shown. For example, wearing the full prospector kit along with a charged celestial ring and Varrock armour 2 can increase both XP and splinter yield by around 20%. 99 Mining includes the Mining skillcape, Dragon Pickaxe and Varrock armour.

Rubium rocks
Level required					48
Mining XP					30 xp
Required tool					Pickaxe
Respawn time					35.4 seconds

The rocks produce one rubium splinter on every successful mining attempt (or two at level 72+ Mining), though more can be gained using special equipment. They are guaranteed to yield at least two splinters before depleting. After the first splinter is mined (by any player), there is approximately a 1/6 chance on each subsequent splinter mined (by any player) that the rock will deplete. The average yield before the rocks deplete is therefore 7 rubium splinters.

The Varrock armour 2, Mining cape, and celestial ring/signet all work on these rocks. Each splinter that is combusted by the infernal pickaxe grants approximately 2 Smithing XP.

The mining gem drop table has a 1/256 chance to roll on every mining attempt;^[1] if the player is wearing a charged amulet of glory, amulet of glory (t), or amulet of eternal glory, the probability increases to 1/64.2.^[2][3] If the table successfully rolls, the player may receive an uncut gem or nothing, and in either case can not receive an ore.^[4] This neither depletes the rock nor grants Mining experience. The rates shown are for every mining attempt.

• Varrock armour 2 gives a 10% chance to receive an extra splinter.
• Celestial rings and signets provide an invisible +4 boost to Mining level, regardless of charges. When charged with stardust, they also give a 10% chance to receive an extra splinter.
• Prospector kit boosts Mining experience by up to 2.5%.
• Amulet of glory increases the chance of obtaining gems when charged.
• Mining capes give a 5% chance to receive an extra splinter.
• Varrock armour, celestial rings, and Mining capes roll independently; multiple bonus resources can be given.

v t e Sailing resources
Mining	Items Lead ore Nickel ore Rubium Rubium geode Lead bar Cupronickel bar Dragon metal sheet Dragon nails Chain Scenery Lead rocks Nickel rocks Rubium rocks
Woodcutting	Logs Jatoba logs Camphor logs Ironwood logs Rosewood logs Trees Jatoba tree Camphor tree Ironwood tree Rosewood tree
Crafting	Cotton boll Hemp Hemp yarn Cotton yarn Linen yarn
Construction	Bolt of linen Bolt of canvas Bolt of cotton Camphor plank Ironwood plank Rosewood plank
Farming	Seeds Flax Hemp Cotton Camphor Ironwood Rosewood Elkhorn Pillar Umbral Saplings Camphor Ironwood Rosewood Plants Flax Hemp Cotton Camphor tree Ironwood tree Rosewood tree Elkhorn coral Pillar coral Umbral coral Corals Elkhorn Pillar Umbral
Fishing	Raw giant krill Giant krill Raw haddock Haddock Raw yellowfin Yellowfin Raw halibut Halibut Raw bluefin Bluefin Raw marlin Marlin Raw swordtip squid Swordtip squid Raw jumbo squid Jumbo squid Squid paste Squid beak
Hunter	Raw red crab meat Red crab meat Raw blue crab meat Blue crab meat Raw rainbow crab meat Rainbow crab meat Crab paste Rainbow crab paste
Other	Gryphon feather