Prospector kit

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A player wearing the prospector kit.

The Prospector kit is an experience-boosting set, purchasable from Prospector Percy's Nugget Shop in the Motherlode Mine. Pieces of the kit are purchased using golden nuggets obtained randomly through mining pay-dirt. The set costs 180 nuggets in total.

The full set, when worn, grants a 2.5% bonus Mining experience. In addition, wearing pieces of the kit in the desert will reduce the need for waterskins, similar to the desert robes.[1]

Wearing full prospector while entering the Mining Guild is one of the tasks in the hard Falador Diary.

Full Prospector is needed for a master clue; Varrock armour 4 can be used.

Despite having two lights attached to it, the Prospector Helmet does not act as a light source.

Obtaining[edit | edit source]

Item XP Boost Cost (in Golden nugget.png) Sells for (in Golden nugget.png) Boost per nugget
(% per Golden nugget.png)
Prospector helmet.png Helmet +0.4% 40 32 0.010
Prospector jacket.png Jacket +0.8% 60 48 0.013
Prospector legs.png Legs +0.6% 50 40 0.012
Prospector boots.png Boots +0.2% 30 24 0.007
Set bonus +0.5%
Complete set +2.5 % 180 144 0.014

When obtaining this particular set, the most efficient method for gaining a higher amount of boosted xp over time is to start by purchasing the more expensive items first. This can be calculated by adding up the xp boosts one would get when buying the items in either order. For both calculations, the variable x is the amount of pay-dirt it takes to receive a nugget, on average about 36.5. Nuggets are received from pay-dirt at a constant rate of 2.74%[2], so x can be substituted with 1 for easy calculation. y is the amount of mining xp each pay-dirt awards the player, which is also a constant and can be substituted for 1.

On average you need to mine 6570 pay-dirt (or 235 full inventories, rounded up) to obtain enough nuggets for the full set.

Cheap first[edit | edit source]

Purchasing the boots, helmet, legs, and jacket, in that order gives:

(30x * y) + (40x * y * 1.002) + (50x * y * 1.006) + (60x * y * 1.012) = 396,569 XP

Substitute 1 for x and y:

30 + (40 * 1.002) + (50 * 1.006) + (60 * 1.012) = 181.1

Expensive first[edit | edit source]

Purchasing the jacket, legs, helmet, and boots, in that order gives:

(60x * y) + (50x * y * 1.008) + (40x * y * 1.014) + (30x * y * 1.018) = 397,445 XP

Substitute 1 for x and y:

60 + (50 * 1.008) + (40 * 1.014) + (30 * 1.018) = 181.5

Conclusion[edit | edit source]

Based on the above numbers, over the time it takes to obtain the set, it is more efficient if players start with the most expensive items first, because the incremental xp boost over time will be higher than with the smaller xp boosts while obtaining the nuggets for the higher tier items.

Changes[edit | edit source]

Date Changes
15 May 2014

The Prospector outfit now also provides some protection from desert heat.

References[edit | edit source]

  1. RuneScape Mythbusters Special - Ep. 2 (21:15 - 21:41) on Jagex's official Old School RuneScape YouTube channel.
  2. Jagex. Mod Ash's Twitter account. 8 June 2015. (Archived from the original on 29 May 2020.) 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."