|Release date||11 December 2012 (Update)|
|Alchemy||Cannot be alchemised|
|Store price||Not sold|
|Exchange price||278,831 coins (info)|
|Examine||15% chance to crush ore as you mine it, earning additional Mining experience and not collecting the ore. Lasts 3 hours.|
When equipped, it offers a 15% chance to crush the ore (losing it in the process) in exchange for increased experience while Mining.
The crushed ore appears to give 38% bonus experience, which means 15% chance to give 38% bonus experience. This works out at about 5.7% bonus experience. Rates at high mining are approximately 90k/h so 3 hours of bonus exp gives a total of 3 x 0.057 x 90,000 = 15,390 bonus experience total, although you will probably get a bit more than this due to the decrease in banking needed.
This effect does work when mining rocks in the Living Rock Cavern.
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