Gem rocks

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Gem rocks

Release	27 January 2003 (Update)
Members	Yes
Level	40
Quest	No
Location	Shilo Village, Lunar Isle mine, Al Kharid mining site resource dungeon, Prifddinas
Output
Ore	Gems
Mining XP	65
Tool XP	7.67
Max yield	1
Examine
This rock contains gems.

Defined properties:

All Is members only: true Is members only: true All Release date: 27 January 2003 Release date: 27 January 2003

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Gem rocks are a unique type of rock that yield gems, rather than ore, when mined. They give 65 Mining experience per rock, regardless of what gem is mined. 40 mining is required to mine these rocks. The Gem Rock takes about a minute and twenty five seconds to restore, though the rate changes depending on how many players are connected to the server. The chance of mining an additional ore while wearing Varrock armour does not apply to gem rocks.

The types of gems that can be mined are:

• Uncut opal
• Uncut jade
• Uncut red topaz
• Uncut sapphire
• Uncut emerald
• Uncut ruby
• Uncut diamond

The gem received is random - rocks are not bound to specific gems, except for the rocks found during The Tale of the Muspah. It is rare to receive more expensive gems such as rubies and diamonds. Gems are mined at a faster rate while wearing a charged Amulet of glory and Ring of wealth. Wearing a Ring of wealth also gives a small chance to get two gems from one rock (a message will appear when this occurs).

A popular technique when mining these rocks is to bring a chisel and cut and fletch the gems into bolt tips thus reducing the need to bank. Another popular technique is to drop the less valuable gems such as jades and opals to maximise the amount of money made.

The Gem Rocks can be used with the Gem bag reward from Dungeoneering for minimal banking by fletching the cheaper gems to bolt tips and saving the more expensive gems.

Locations

Shilo Village

After completing the Shilo Village quest, access to the gem rocks is obtained. Additionally, the Underground Gem Mine can be accessed after completing hard tasks of Karamja Diary.

Based on a sample of 2084 consecutively mined gems at Shilo Village with a Rune pickaxe and Amulet of glory, the chance of mining each type of gem is as follows:

Gem Type	Approx. chance of mining	Current GE Value
Uncut Opal	46.4%	177
Uncut Jade	21.9%	315
Uncut red topaz	12.7%	346
Uncut Sapphire	7%	809
Uncut Emerald	4.1%	2,555
Uncut Ruby	3.7%	1,842
Uncut Diamond	3.5%	4,843

Based on the above table, this means on average the player will earn 594.099 coins per rock mined, or an average of 27.69 Crafting experience and 4.8429 Fletching experience should the player decide to create bolt tips, assuming no gems are accidentally crushed.

Lunar mine

After completing Lunar Diplomacy, access to gem rocks within the Lunar Mine is gained.

Al Kharid

The Al Kharid Resource Dungeon requires a Dungeoneering level of 75 to access. There is little competition due to the high requirement. 7 gem rocks are here as well as lower level implings that can be caught while waiting for rocks to respawn.

Based on a sample of 501 consecutively mined gems at the Al Kharid Resource Dungeon with a Rune pickaxe, the chance of mining each type of gem is as follows:

Gem Type	Approx. chance of mining	Current GE Value
Uncut Opal	51.1%	177
Uncut Jade	24.6%	315
Uncut red topaz	9.6%	346
Uncut Sapphire	5.8%	809
Uncut Emerald	4.2%	2,555
Uncut Ruby	2.8%	1,842
Uncut Diamond	2.0%	4,843

Based on the above table, this means on average the player will earn 503.82 per rock mined, or an average of 25.25 Crafting experience and 2.5513 Fletching experience should the player decide to create bolt tips, assuming no gems are accidentally crushed.

Prifddinas

The 8 Prifddinas gem rocks, found within the Trahaearn section, yield different gems then other gem rocks found on RuneScape. Unlike the other rocks, they do not contain uncut opal, jade and red topaz, but instead offer uncut gems up to onyx and spirit gems up to dragonstone.

Possible rewards include:

• Uncut Sapphire
• Uncut Emerald
• Uncut Ruby
• Uncut Diamond
• Uncut onyx
• Spirit Sapphire
• Spirit Emerald
• Spirit Ruby
• Spirit Diamond
• Spirit Dragonstone

Based on a sample of 2700 consecutively mined gems at the Prifddinas Gem Rocks with a Rune pickaxe, the chance of mining each type of gem is as follows:

Gem Type	Approx. chance of mining	Current GE Value
Uncut Sapphire	44.8%	809
Uncut Emerald	18.1%	2,555
Uncut Ruby	6.3%	1,842
Uncut Diamond	2.0%	4,843
Uncut Onyx	0.2%	2,297,944

Spirit Gem Type	Approx. chance of mining
Spirit Sapphire	13.4%
Spirit Emerald	8.3%
Spirit Ruby	2.2%
Spirit Diamond	1.8%
Spirit Dragonstone	2.9%

Tai Bwo Wannai Cleanup minigame

A gem rock in the Tai Bwo Wannai Cleanup minigame.

Gem rocks can be found randomly while hacking jungle in the Tai Bwo Wannai Cleanup minigame. When a player discovers one, a message will appear saying: "The jungle parts to reveal a gem-rich rock". These rocks have gems encrusted on the surface, which disappear as the player mines it. The rock may be mined three times before disappearing. The colours of these gems are not an indication of which gems the player will actually mine.

Ice Cave

During The Tale of the Muspah there are gem rocks that contain only sapphires, no experience is gained from these rocks and they cannot be mined again.

Trivia

• The rocks appear to only contain purple gems (dragonstone), but they can't be collected from most gem rocks. The Gem rocks in Tai Bwo Wannai Cleanup look more like what's inside; they show Opal, Topaz and Jade.
• If two players begin mining a gem rock at the same time, occasionally both will receive a gem from the rock.
• When the gem rock is mined, the xp lamp sound will play.