Question

How many gems is it possible to get in Pokemon shuffle without using actual money or participating in special events?

Answer 1

You get 1 at the beginning when you first start (during the tutorial).
You also get 1 from participating the Lucario event (now past).
You can get a maximum of 2 jewels from Streetpass (1 for your 1st and 1 for your 100th).
You then get 1 every Mega Pokemon you beat, along with their Megastone.

1. Mega Audino
2. Mega Ampharos
3. Mega Altaria
4. Mega Lopunny
5. Mega Kangkaskhan
6. Mega Sableye
7. Mega Slowbro
8. Mega Mawile
9. Mega Gengar
10. Mega Glalie
11. Mega Mewtwo

15 Jewels in total. I'm not sure if you get another Jewel for Mega Lucario if you rank high enough.

I think this is correct; someone please correct me if I'm wrong.

List of Pokemon in Pokemon Shuffle

Comments

You also get 1 from Kyogre and other "special" Pokémon.

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Do you? I didn't remember getting one from Kyogre, nor Rayquaza. :c

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I didn't play Rayquaza, but I do remember Serebii sying you got 1 Jewel the first time you battle Kyogre. I got one.