Gem rock

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Gem rocks can be mined through the Mining skill in Shilo Village after a player has completed the Shilo Village quest or in the Lunar Isle mine after Lunar Diplomacy. A Mining level of 40 is required to mine gem rocks, granting 65 Mining experience per gem. The rocks regenerate in around 105 seconds (1:45) after being mined.

There is also another kind of gem rock, which appears during the Tai Bwo Wannai Cleanup minigame. In these rocks, the gems the player will mine are clearly visible, encrusted on the outside.

A gem rock uncovered under some jungle in Tai Bwo Wannai.

When a gem rock is mined, one of the following gems is produced:

Uncut opal.png Opal (~46.86% or 60/128)
Uncut jade.png Jade (~23.26% or 30/128)
Uncut red topaz.png Red topaz (~11.76% or 15/128)
Uncut sapphire.png Sapphire (~7.14% or 9/128)
Uncut emerald.png Emerald (~3.94% or 5/128)
Uncut ruby.png Ruby (~3.89% or 5/128)
Uncut diamond.png Diamond (~3.15% or 4/128)
Percentages are based on a sample of 145,701 mined gem rocks.


Taking this into consideration, mining a Gem rock is worth 761 on average. Wearing a charged amulet of glory increases the speed at which gem rocks are mined.

Trivia[edit | edit source]

  • When a gem rock is mined, the experience lamp sound will play. This is also the same sound as when a gem is mined from a normal ore rock.