|Release||15 June 2015 (Update)|
|High alch||0 coins|
|Low alch||0 coins|
|Exchange||7,278 coins (info)|
|Examine||Tougher than average dragon bones.|
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.
|Item quantity required||1|
|Base junk chance||37.3%|
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- For an exhaustive list of all known sources for this item, see here.
|Falador resource bundle||N/A||1||Unknown|
Cost and XP analysisEdit
|Experience||144||504||576||648 (Total)||360 (Prayer) + 288 (FM)|
|Cost per XP||-50.5||-14.4||-12.6||-11.2 (Total)||-20.2 (Prayer) or -25.3 (FM)|
- It is assumed that two burners are lit while using the gilded altar and does not include the cost of clean marrentill.
- 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.