Gleason's Gielinor Guide

Medallion of the Deep

Released							19 November 2025 (Update)
Members							Yes
Properties
Tradeable							No
Equipable							Yes
Stackable							No
Noteable							No
Options							Wear, Destroy
Destroy							You might be able to find it again on the Pandemonium.
Examine							Allows the wielder to breathe underwater.
Values
Value							200 coins
High alch							120 coins
Low alch							80 coins
Weight							1 kg
Advanced data
Item ID							32386
Link							MOID

The Medallion of the Deep is a neck-slot item which allows the player to dive underwater without the need for a diving apparatus and fishbowl helmet. It can also be used during The Great Brain Robbery to safely explore Harmony Island. It is created by assembling eight medallion fragments found on various islands accessed via the Sailing skill, granting 750 Sailing experience along with 500 Crafting experience.

Assembling the medallion requires that the player read the waterlogged journal, which was written by the medallion's creator and contains hints on the location of the fragments. As the final fragment is found on Wintumber Island, the minimum Sailing level needed to obtain the medallion is 63.

Players can only own one medallion at a time. However, a duplicate may be claimed if it is stored in a STASH unit. If the medallion is lost, players can reclaim it by searching the crate where the waterlogged journal was found (near Henderson on the Pandemonium). Upon doing so, a chatbox message will appear, stating "Against all common sense, the Medallion of the Deep has somehow found its way into this crate. You quickly grab it before you lose it again."

Combat stats


Attack bonuses
+0	+0	+0	+0	+0
Defence bonuses

+0	+0	+0	+0	+0
Other bonuses				Slot

+0	+0	+0%	+0	List

Creation

Requirements
Skill	Level	XP
Sailing	63 ^(nb)	750
Crafting	1	500
Read the waterlogged journal.
Members	Ticks	? (edit)

Materials
Item		Quantity	Cost
	Medallion fragment (1)	1	N/A
	Medallion fragment (2)	1	N/A
	Medallion fragment (3)	1	N/A
	Medallion fragment (4)	1	N/A
	Medallion fragment (5)	1	N/A
	Medallion fragment (6)	1	N/A
	Medallion fragment (7)	1	N/A
	Medallion fragment (8)	1	N/A
Total cost			0
	Medallion of the Deep	1	N/A

Item sources

Source	Level	Quantity	Rarity
Crate (The Pandemonium)	N/A	1	Always

Treasure Trails

Tier	Emotes	STASH location	Items	Cost
Master	Bow (clue)	In front of the cave on Brittle Isle		1,100,994

Changes

Date	Changes
23 September 2026 (Update)	A replacement Medallion of the Deep can now be obtained even if there is currently one stored in a STASH unit.
16 September 2026 (Update)	Players using the Medallion of the Deep to breathe underwater are now permitted to equip capes and helms down there, since they are not using those slots for diving gear.
19 August 2026 (Update)	The item was renamed from "Medallion of the deep" to "Medallion of the Deep".
20 May 2026 (Update \| poll)	The Medallion of the Deep now functions as breathing apparatus throughout the Fossil Island underwater areas. Within the underwater Agility/Thieving area, it will reduce oxygen depletion by 80%, as polled.
24 November 2025 (Update)	Hotfix Assembling the medallion no longer grants 500 Magic experience.

Trivia

Prior to 20 May 2026, if the player assembled the medallion while in the Underwater Agility and Thieving area, Mairin forbade them from leaving via the normal exits, treating the player as if they had a fishbowl helmet in their inventory. The only way to leave was to either drown, teleport out, or destroy the medallion and leave via the normal exit.