Digiice is a block found in the frozen biomes in the Digital World. It is used to generate the Glacier biomes. It is the digital equivalent of Ice in the Overworld. However, it does not change into water when broken nor does it melt when nearby a torch.
It does not have a preferred tool to be broken with, nor does the efficiency enchantment have any effect on it, so it does take a while to be broken.
It can be used to grow IceShrooms, an item used to tame Plant Digimon and heal HP and Energy of any Digimon, although it lowers Weight more than DigiShrooms do.