You can buy one at the Celadon Department Store, on the fourth floor.
give it a thunderstone
No. If you offer it a thunderstone, it will refuse it.
give the shard hunter a yellow shard found under water near mossdeepcity and sootoplis
the only one i no is pikachu evolves into raichu with a thunderstone
You need surf, you'll find on at New Mauville (the route is under the cycle bridge to the east) There'll be a thunder stone in the complex. You can also collect Yellow Shards from using Dive in the Ocean and trade them for a Thunderstone. Otherwise you can simply trade with FireRed/LeafGreen with a Pokemon holding a Thunderstone.
The thunderstone is easy to get. First you go to Celadon city, then into the department store then you go to the fourth floor. and it costs 2100
You can trade them for evolution stones eg. yellow shard = thunderstone
Pikachu+Thunderstone=Raichu Eevee+Thunderstone=Jolteon These are the only 2 pokemon that evolve with the thunderstone in pokemon emerald
you can find one at the power plant
There is No Specific Level Pikachu Needs a Thunderstone to evolve
You can buy it in the Celadon department store, or find it in the power plant
you can find it by the lighthouse in sunyshore city by the snorlax rock