Kalos walkthrough section
Pokemon X and Y Phase 10: Mega Stone Shimmer Hunt (20:00–20:59 only)
★ ★ ★ The biggest post-game collection goal. After the Mega Ring upgrade at Anistar, Mega Stones appear as glowing shimmer-spots across Kalos.
Phase 10 Post-Game Professor Sycamore Kalos Professor Looker Bureau, Kiloude, Mewtwo, Zygarde, and Mega Stones. 10 / 10 
Phase 10 section 9 of 15
★ ★ ★ The biggest post-game collection goal. After the Mega Ring upgrade at Anistar, Mega Stones appear as glowing shimmer-spots across Kalos.
GuidePokemon X and Y
PhasePhase 10
Section9/15
Mega Stone Shimmer Hunt (20:00–20:59 only)
★ ★ ★ The biggest post-game collection goal. After the Mega Ring upgrade at Anistar, Mega Stones appear as glowing shimmer-spots across Kalos. They only appear from 20:00 to 20:59 each day (3DS system clock time). One Mega Stone per spot, picked up via Dowsing Machine.
The full Phase 10 Mega Stone shimmer list
Aerodactylite (Y)Glittering Cave — Pokémon X has Tyranitarite instead
Tyranitarite (X)Glittering Cave — Pokémon Y has Aerodactylite instead
Manectite (Y)Route 13 (Lumiose Badlands)
Houndoominite (X)Route 13 (Lumiose Badlands)
PidgeotiteRoute 7 or Lumiose City North area (varies by source)
AggroniteGeosenge Town
GarchompiteVictory Road
AlakaziteReflection Cave (NW passage)
GyaradositeCouriway Town
Heracronite (Y)Santalune Forest — Pokémon X has Pinsirite
Pinsirite (X)Santalune Forest — Pokémon Y has Heracronite
BanettiteLost Hotel
MawiliteCyllage City
MedichamiteRoute 14 / 15 area
GalladiteRoute 19 (Grande Vallée Way)
Aerodactylite / TyranitariteBoth available depending on version (see top)
Source caveat: The full shimmer-spot list of every Mega Stone with exact route coordinates is one of the harder pieces of data to nail without active wiki access. Some exact locations may vary across sources. All Mega Stones DO appear at 20:00–20:59 shimmer spots — just walk routes during that hour with Dowsing on.
Mega Stones you already have
- From the main story: Charizardite X/Y (Sycamore Phase 2), Venusaurite or Blastoisinite (alternate Phase 2), Lucarionite (Korrina Phase 3), Ampharosite (Sea Spirit's Den Phase 4), Gengarite (Laverre Phase 6), Abomasite (Frost Cavern Phase 8), Absolite (Kiloude rival), Mewtwonite X/Y (Mewtwo).
Dex quick links
