Ampharosite (Mega Stone)

In: Mega Stones
Ampharosite
Location New Mauville – Northeast side of the area on the ground
Use On Ampharos
Mega Evolution Mega Ampharos

In Omega Ruby & Alpha Sapphire, Ampharos’ Mega Stone (Ampharosite) can be found on the ground in the northeastern back section of New Mauville. This is an underground power plant located near Mauville City. However, you need Wattson’s permission to access the area.

Prerequisites

Most Mega Stones, including Ampharos’ Mega Stone, are only obtainable after you defeat/catch Kyogre or Groudon in the Cave of Origin. This major event happens right before you’re able to challenge the eighth and final Gym.

So after you defeat/catch Kyogre or Groudon, head to Mauville City’s Pokémon Center. Wattson will wait for you in front of Square Tower to start the side-quest that unlocks New Mauville & access to the mega stone.

Location

Note: If you already have access to New Mauville, you can skip to Step 13 of this tutorial to see the Ampharosite’s exact location.

Step 1: From the Mauville City Pokécenter, head south and talk to Wattson.

Talking to Wattson in front of Square Tower
Talking to Wattson in front of Square Tower

Step 2: Then go back inside the city’s interior using the north entrance.

Heading back inside the city
Heading back inside the city

Step 3: Walk west until you see an elevator on the north wall.

Outside the Mauville City Gym
Outside the Mauville City Gym

Step 4: Use the elevator to get to the second floor.

The elevator that takes you to Mauville Hills
The elevator that takes you to Mauville Hills

Step 5: Make your way toward Wattson’s apartment, located on the city’s south side.

Inside Mauville Hills
Inside Mauville Hills

Step 6: Follow the hallway heading south.

Mauville Hills’ west hallway
Mauville Hills’ west hallway

Step 7: Then you’ll want to right and continue moving east down the hallway.

The apartment complex’s south hallway
The apartment complex’s south hallway

Step 8: Enter the second apartment from the left (it’ll be on the northern wall, pictured below).

Standing outside Wattson’s apartment
Standing outside Wattson’s apartment

Step 9: Talk to Wattson here, and he’ll grant you access to New Mauville.

Inside Wattson’s apartment
Inside Wattson’s apartment

Step 10: Then go to Route 110 using Mauville City’s south exit.

Mauville City’s south exit on Route 110
Mauville City’s south exit on Route 110

Step 11: Use Surf on the body of water near Cycling Road’s entrance. Move east to reach New Mauville.

Surfing on Route 110
Surfing on Route 110

Step 12: If you keep Surfing east then you should land outside of New Mauville’s entrance.

The entrance to New Mauville is up ahead
The entrance to New Mauville is up ahead

Step 13: Interact with the gate to enter the power plant.

Using the Retinal scanner to enter New Mauville
Using the Retinal scanner to enter New Mauville

Step 14: Once inside, go through the door in the northwest corner from your current location.

Inside the underground power plant
Inside the underground power plant

Step 15: In the next room, go up and then turn right. You’ll want to go towards the rightmost part of the room.

Walking along New Mauville
Walking along New Mauville

Step 16: At the end of the hallway, interact with the sparkling item on the ground in the small nook below you. This is the Ampharosite.

The location of the Ampharosite
The location of the Ampharosite
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