Sam's eyes are literally sparkling as he looked at the yards and yards of the green crystal in the estate.
It is indeed called impact crystal, and even in the material catalogue he read in the Divine dimension, not many uses regarding this item are mentioned. At most, these can be used for some surprise attack.
But Sam wouldn't agree to that point.
As far as he was concerned, there is no material which is useless just the right person didn't get to use it for the right purpose.
And Sam happened to see many possibilities with these crystals.
For him, one hundred fifty million is not a lot. He earned quite a huge sum from his businesses as well as looting the Black water Count city branches which was more than 120 million altogether.
And the Marquis city branch even earned him over 300 million in spirit stones alone.