To obtain a gigalith you have to trade a boldore to a separate game when this happens then the boldore will evolve. i personally think that it looks amazing and is well worth the time.
Chat with our AI personalities
By being traded
Yes, you can still evolve that Boldore into Gilgalith.
You have to trade a boldore to have it evolve.
Boldore evolves when you trade it.
It evolves when it is traded, so find someone to trade it to, and to trade it back.