Diamond Island

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Sea Chart icon for Diamond Island
Diamond Island
“I've seen things you wouldn't believe...but a huge diamond on the sea floor? That's new to me.”
Captain T. Ode, Paper Mario: The Origami King

Diamond Island is one of 11 accessible islands in the Great Sea in Paper Mario: The Origami King. Unlike the other ten islands, all of which are initially found on the surface, Diamond Island is completely sunk in the sea, found midpoint between Club Island, Full Moon Island, Heart Island, and Spade Island. It is charted in territory D-3 with a diamond icon. Mario, Olivia, and Captain T. Ode must dive down to find a large diamond underwater and use the Diamond Key acquired from Luigi on Mushroom Island to unlock the "island", allowing them to access its interior. There are absolutely no Toads to be rescued, Not-Bottomless Holes to be filled, Collectible Treasures to be found, or ? Blocks to be struck here.


The shop at Diamond Island.

After getting into the island dome, Olivia notes its colorful features, with Captain T. Ode speaking of a hidden jewel beneath the waves. Unlike the other islands, Captain T. Ode does not give it a name based on its shape, although he does refer to it as rare as a diamond. Suddenly, a Toad statue in the middle of the area lights up, welcoming them and introducing the trials of power, wisdom, and courage, each rewarding an orb upon completion. These orbs are used to enter the Sea Tower.

Off to the right, away from the trials, there is a bench nearby Mario can use to restore his HP. Additionally, there is a Toad statue next to the bench Mario can purchase Mushrooms from. Off to the left of the trials is a Save Block and the path to Ice Vellumental Mountain.

There are three temples in total. The red, blue, and green serve the trials of power, wisdom, and courage, respectively. The temples can be visited in any order, but each have a Magic Circle requiring the power of a different Vellumental to access. Mario must use the Earth Vellumental to lower the dirt mound holding up the red temple, the Ice Vellumental to freeze the water surrounding the blue temple, and use the powers of both the Water Vellumental and Ice Vellumental to create a pool of water around the green temple and freeze it, respectively. Mario must have obtained a bibliofold for the Ice Vellumental in order to access the latter two temples.

Inside the red temple, featuring the Trial of Power, Mario must speak to the statue in back and step into the glowing circle to begin. This warps him to a separate area with a similar build. To clear the first stage, Mario must strike all of the Brick Blocks that appear in the allotted time. The blocks get bigger and end with one giant block Mario must strike multiple times. Just as in the last stage, numerous Brick Blocks appear and must be destroyed, this time with Mario's hammer. However, rather than being able to simply hammer the blocks to destroy them, Mario must build up an attack as he would in battle, breaking all blocks within a radius. The third and final stage features a giant nail, requiring Mario to get onto it and use a series of jump and hammer attacks to drill in the nail within one minute. Doing so clears this temple and awards Mario the Power Orb.

Upon leaving this temple, Mario is shut out and must head to one of the other temples. The first room of the blue temple has a very similar setup, featuring the Trial of Wisdom and a glowing circle Mario must stand in to warp to the first challenge. The Trial of Wisdom features questions, including the player's knowledge of events in the game. The first room is a true/false challenge, asking a simple question the player must answer by standing on the check mark tray for true and the "X" tray for false. After Mario has confirmed his answer, he is launched into the next room. If he has answered correctly, he is able to warp to the next room, featuring a slightly more difficult true/false question. Although the first two questions are random, the third and final question is a riddle. Mario is required to speak to each of the three statues in the room and determine which one is lying by answering "A", "B", or "C". If Mario answers correctly, he completes the temple of wisdom and receives the Wisdom Orb.

The green temple, featuring the Trial of Courage, also requires Mario to warp to a starting room to begin. Mario is tasked with holding and releasing a rope, then grabbing it again in time. If Mario is not quick enough, he is crushed by a basin and forced to restart the challenges of courage. However, Mario also cannot grab the rope before the basin falls below the arrow - that is also a fail, and Mario is forced to restart. The second stage has a similar setup, aside from a noticeably smaller rope. The third and final stage has a much longer rope, although instead of a falling basin, the object is now a Big Thwomp which falls rapidly, requiring the player to have extraordinary reflexes. After all three stages are cleared, Mario is awarded the final orb, the Courage Orb. It is to be noted that if the player is struggling with a certain set of trials (having failed more than one time), easier challenges are offered in exchange for 3,000 coins.


Two items can be purchased from the Toad statue on the east side of the area, next to the bench.

Image Item Price
Shiny Mushroom PMTOK icon.png Shiny Mushroom 300
Shiny Mushroom 3-Pack PMTOK icon.png Shiny Mushroom 3-Pack 840


  • Collectible Treasure No. 93: "An "island" slumbering beneath the Great Sea. Legendary structures await those who can find their way inside."

Names in other languages[edit]

Language Name Meaning
Japanese ダイヤ
Diamond Island
Spanish Isla Diamante Diamond Island
French Île du carreau
Dutch Ruiteneiland Diamond Island
German Karo-Insel Diamond Island
Italian Isola Quadro
Chinese (Simplified) 方块岛
Fāngkuài Dǎo
Diamond Island
Chinese (Traditional) 方塊島
Fāngkuài Dǎo
Diamond Island