For the gift that Calter planned on making, he only needs a small piece of crystal no larger than a few centimeters
However, he still brought chunks and chunks of the glass crystals. These glass crystals are called Wyamonite. As an item that came from the Prison, it was even harder than most metals
Not to mention, if the crystal was fed with mana for a long time, it would even grow harder
Although for the current earth, the crystal is expensive since it can only be gained from the prisoners, in the Prison of Sinners itself, these items weren't that rare
Despite its ability to become harder the more mana was fed to it, the mana cost and benefit wasn't worth it
It doesn't matter though, what Calter needs from these crystals was its ability to change into any shape
As long as the user is skillful in mana control, they would be able to manipulate the crystals and turn them into any shape they want
