In the Pokémon series of games, Water Stones are valuable items that allow you to evolve certain water-type Pokémon. Usually, Water Stones (like other elemental stones) are hard to come by — often, there are only a few in each game. In Pokémon Emerald, there are two ways to get a Water Stone: you can trade a blue shard for one at the Treasure Hunter's house or find one on the Abandoned ship.

Part 1
Part 1 of 3:

Getting a Water Stone from the Treasure Hunter

  1. 1
    Get a Blue Shard. This method uses the shard trader (also called the Diving Treasure Hunter) to exchange a blue shard for a water stone. To begin, you need a blue shard. These semi-rare items can be found in several places, including:[1]
    • Under rocks in various locations when using Dive to access underwater routes (e.g., Route 127, 128, etc.)
    • Randomly after defeating wild Clamperl
  2. 2
    Go to the Diving Treasure Hunter's house. Once you have one blue shard, you can head to the Diving Treasure Hunter. His house is located on an island hut on Route 124 (near Mossdeep City.)[2]
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  3. 3
    Talk to the Treasure Hunter. He will offer to trade your blue shard for a Water Stone. Accept the trade and you will have a water stone!
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Part 2
Part 2 of 3:

Getting a Water Stone on the Abandoned Ship

  1. 1
    Go to the Abandoned Ship. Another way to find a Water Stone doesn't use blue shards at all. Instead, this Water Stone is found within the wrecked ship known as the S.S. Cactus. The ship is located on Route 108 (in the bottom left corner of the world map.)[3]
    • You will need to have a Pokémon that knows the move Surf to get to the Abandoned Ship. You'll also need to know the move Dive to get the Water Stone — it's not underwater, but it's in part of the boat you can't access without going underwater.[4]
  2. 2
    Enter the ship and head to the deep-water section. Once you arrive at the abandoned ship, use these directions to get through the maze-like interior of the ship:
    • Walk up the stairs and into the first door you see.
    • Head up, then turn right and go down the stairs in the top right.
    • Head straight down into the door directly below you.
    • Walk up to the pool of water.
  3. 3
    Use Dive to enter the depths of the ship. As noted above, you'll need a Pokémon with the moves Surf and Dive to get through this upcoming section. Use your Pokémon's Surf move at the edge of the pool of water to start swimming, then move down and use Dive to travel under the water to the next part of the ship.
    • Dive (HM08) can be found in Mossdeep City. You will need the Mind Badge in order to use it.[5]
  4. 4
    Proceed through the water and re-surface. Use these simple directions to get through the deep-water section of the boat:
    • Head to the left and go through the door in the top left of the hallway.
    • Move forward a few spaces into the room and re-surface.
  5. 5
    Grab the Water Stone in the third door. Once you hop out of the water, walk to the right and enter the third door. In this room, you should see two item balls: one in the top right and one on the left. The one on the left contains the Water Stone.
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Part 3
Part 3 of 3:

Using Your Water Stone

The Water Stone is used for evolving certain water-type Pokémon — without it, these Pokémon won't evolve, even if you level them up constantly. See below for evolutions that require the Water Stone in Pokémon Emerald.[6]

Water Stone Evolution Guide
Base Pokémon Evolves to...
Eevee Vaporeon
Shellder Cloyster
Staryu Starmie
Poliwhirl Poliwrath
Lombre Ludicolo

Community Q&A

  • Question
    How do I get a thunder stone in Pokemon Emerald?
    SandersB57
    SandersB57
    Community Answer
    There are 2 ways to go about getting a thunder stone. The first is to do the New Mauville quest for Watson after beating Norman. Watson will give you a key that will let you into New Mauville, which is located on Route 110 through surf. The stone will be located to the right of the generator when entering New Mauville. The second way is to give the shard maniac outside Mossdeep a yellow shard. One can be found if you surf from Lilycove east and partially north to a dive spot on Route 124. I suggest hugging the northern wall until you find it. Then you should dive and travel underwater to a new area in which you can resurface. There should be a yellow shard right to your left on an island.
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About This Article

Madeleine Flamiano
Co-authored by:
Role-playing Game Enthusiast
This article was co-authored by Madeleine Flamiano. Madeleine Flamiano is a Role-playing Game Enthusiast based in Berkeley, California. She has over 20 years of gaming experience and is an avid gamer in all parts of her life—she's especially fond of tabletop board games and the world of Pokémon. Pokémon Crystal Version is her favorite game in the franchise. Some of her greatest feats were evolving Eevee to a Level 99 Umbreon and collecting every legendary bird Pokémon. Her professional path started at NaNoWriMo, where she scripted a summer-long world-building series and hosted its Virtual Write-Ins. She has written seven books for DDCO Publishing, which specializes in LitRPG and is operated by New York Times Bestseller JA Cipriano. She has ranked in the Top 100 list for Dark Fantasy, Sword & Sorcery, and Fantasy Romance. She was voted by her peers as "The Perfectionist" on Roleplay Adventures, a SERP for forum roleplaying. Madeleine graduated from Mills College with a B.A. in English with a concentration in Literature and a Minor in Philosophy. This article has been viewed 259,465 times.
11 votes - 82%
Co-authors: 12
Updated: October 1, 2022
Views: 259,465
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