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Chamber of the Jewel is a secret chamber in the cavern on Route 13. It requires HM8 Rock Climb, as well as 4 specific forms of Unown to access. The deepest part of this chamber is where Mythical Pokémon Diancie waits for the player.

Notable Event

Catching Diancie

The crystals around Route 13 is said to attract the Jewel Pokémon Diancie. It has stayed here for a long time to secure all those glowing crystals. Its chamber is locked by a door with "Open" carved in Unown text. After acquiring Harvest Badge, players may bring a Pokémon that knows Rock Climb, as well as the Unown O, P, E, and N in party to unlock the door. Unown can be found in Desert Catacombs on Route 11.

OPEN Door

The door blocking Chamber of the Jewel, with "Open" written in Unown text.

Upon entry and hopping down a couple of ledges, a long passage leads the player to another set of stairs back up. At the end of this staircase, a frozen lake with shining crystals around the walls can be seen, with Diancie on a small island in the middle. Reach Diancie through the stone path and click on it to initiate the battle. Players only have 1 chance to catch it, so save beforehand and turn off Auto Save function. As Diancie is very hard to catch and appears in a cave, it is recommended to purchase a lot of Dusk Balls in Poké Ball Emporium, Anthian City - Shopping District before actually proceeding to fight Diancie.

Pokémon

Wild Pokémon

All Wild Pokémon are the same as those on Route 13.

Note: Rarity levels are estimations according to this scale and might be subject to changes due to different encounter assessment results, unless supported by official encounter rates, which are listed in red under the rarity level if known.

Pokémon Type Image Rarity Items EV Yield
Walking Cave Lv. 32-36
FoongusGrass
Poison
Foongus XY
CommonTiny MushroomBig Mushroom1 HP
TangelaGrass
Tangela XY
CommonNone1 Def
DuosionPsychic
Duosion XY
UncommonNone2 Sp. Atk
VolbeatBug
Volbeat XY
UncommonBright Powder1 Speed
IllumiseBug
Illumise XY
UncommonBright Powder1 Speed
JoltikBug
Electric
Joltik XY
RareNone1 Speed
TynamoElectric
Tynamo XY
Very Rare
1/70 (Appr. 1.43%)
None1 Speed
Click on the Pokémon names to check their learnsets on Bulbapedia. All Pokémon above have been updated to follow their movesets in Pokémon Sun and Moon. Hover on the item sprites to check the exact chance of being held by the Wild Pokémon.

Roaming Pokémon are not listed in the table above. They are fixed at Lv. 40 and have a 0.1% chance of appearing anywhere in Roria with wild encounter methods specified here.

Special

Warning: Players can only battle the following Pokémon once! Save beforehand and turn off Autosave.

Pokémon Type Level Image Rarity EV Yield Item
Mythical Pokémon
Requires opening the door with O, P, E & N Unown
Recommended Poké Balls: Quick Ball 1 Quick Ball + Dusk Ball Dusk Balls
DiancieRock
Fairy
Lv. 40
Diancie XY
One Only1 Def
2 Sp. Def
None
If attempts of catching the above Pokémon failed, immediately leave the game and rejoin without saving, in order to secure a second chance.

Click on the Pokémon names to check their learnsets on Bulbapedia. All Pokémon above have been updated to follow their movesets in Pokémon Sun and Moon. Hover on the item sprites to check the exact chance of being held by the Set Encounter Pokémon.


Roria
Roria
Towns Mitis TownCheshma TownLagoona Lake (Trenches) • Port Decca
Cities Silvent CityBrimber CityRosecove City (Beach) • Anthian City (Housing Dist.Shopping Dist.Battle Dist.ParkSewer) • Aredia City (Old ArediaAredia Ruins) • Fluoruma CityFrostveil City (Catacombs)
Routes 12345678910111213141516
Caves &
Mountains
Glistening GrottoSteam ChamberMt. Igneus (Igneus Depths) • Path of TruthSilver CoveMt. Cragonos (MinesCliffsPeakSanctuarySpringChamber of the Jewel) • Desert CatacombsNature's DenCalcite ChamberMartensite ChamberDendrite ChamberTitans' ThrongFreezing Fissure
Islands Lost Islands (Deep Jungle)
Other
Locations
Gale ForestOld GraveyardSecret GroveGrove of DreamsFortulose ManorCosmeos Valley (Observatory) • Tinbell Tower (Construction Site) • Secret Lab