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Hardened dragon bones detail

Hardened dragon bones are obtained as a drop from adamant dragons and gemstone dragons. Hardened dragon bones give 144 Prayer experience when buried, 576 Prayer experience when offered at the Ectofuntus, or 504 Prayer experience when offered at a gilded altar with 2 burners lit.

DisassemblyEdit

[FAQ] • [doc]

Drop sourcesEdit

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For an exhaustive list of all known sources for this item, see here.
Source Combat level Quantity Rarity
Adamant dragon1161Always
Dragonstone dragon1191Always
Falador resource bundleN/A1Unknown
Hydrix dragon1331Always
Onyx dragon1261Always

Cost and XP analysisEdit

Bury Gilded altar or
Chaos Temple
Ectofuntus Cremation
Experience 144 504 576 648 (Total) 360 (Prayer) + 288 (FM)
Cost per XP -52.2 -14.9 -13 -11.6 (Total) -20.9 (Prayer) or -26.1 (FM)
  • It is assumed that two burners are lit while using the gilded altar and does not include the cost of clean marrentill.

TriviaEdit

  • On release, hardened dragon bones were called adamant dragon bones as only adamant dragons dropped them, with the examine text "Dragon bones infused with adamantite ore." They were changed to their current name on 10 April 2017 due to gemstone dragons sharing the same bone drop.
  • A player choosing to use hardened dragon bones all the way from 1-99 Prayer, using a gilded altar with lit burners and no other experience boosts, would, if all the bones were bought at the current medium price on the Grand Exchange, spend 194,223,367.
    • Additionally the first bone would take them straight to level 5 Prayer.
    • Using the ectofuntus would cost 169,945,446, but would take far longer to do. Simply burying the bones would cost 679,781,784.