Would diamond again get the same kind of outlook that it currently gets?
i.e. would diamond again become a precious stone?
People will start to seek places for shelter and would try and dig caves.
There is a likely-hood that while digging further they may likely hit diamond again.
People would find diamond very useful and since only few people would find it, it is likely that the ones who posses the same would be looked upon as special people.
So, diamond regaining its importance is very likely.
(WDPFP = A hypothetical situation where “World is destroyed, and parents forget the past”. There is no-learning remaining. This is a series of questions to try and reason everything around without a bias.)