Golden nuggets are obtained in the Motherlode Mine by searching the sack after cleaning the pay-dirt. There is a 2.74% chance of pay-dirt yielding a golden nugget, independent of mining level. Therefore, one nugget takes 36.5 pay-dirt mined on average. They can be traded in for various rewards from Prospector Percy's Nugget Shop.
At current values, based on the price of Soft clay each golden nugget is worth 690 coins.
Likewise, based on the average value of Bag full of gems, each golden nugget is worth 859.3 coins.
- ↑ Jagex. Mod Ash's Twitter account. 8 Jun 2015. Mod Ash: "Sorry, I just rechecked. It's actually a flat rate of 2.74% at all levels for a paydirt to become a gold nugget."