Where to find simple crystal block?

As the title states where can I find simple crystal blocks? About to become level 21 and I understand they are needed for the daily task

Thanks

Veteran mode jungle

Veteran mode jungle

Thanks, that sucks though, I don't want to waste my vet/expert modes farming blocks - what a pain

Veteran mode jungle

Thanks, that sucks though, I don't want to waste my vet/expert modes farming blocks - what a pain

You don't have to waste your attempts just farm some blocks don't finish it you quit when you get to the boss

Frozen cavern normal mode has them

Veteran mode jungle

Thanks, that sucks though, I don't want to waste my vet/expert modes farming blocks - what a pain

You don't have to waste your attempts just farm some blocks don't finish it you quit when you get to the boss

Good thinking! Thank you!

Frozen cavern normal mode has them

Thanks, I've run out of vet modes so ill go take a look there - thanks