I'm implementing all I can to prevent this, I cannot remove them from the leaderboard though, that's up to Kongregate. What we can do is report the players for hacking, it's easy to see which ones have too.
While on the mining page, diamonds and gems aren't spawned into the game, they're just added to your value, this means they don't wait on the ground. They are spawned at the same rate though so it only SEEMS like you're getting them faster :)
If you have any problems with survival mode here is what I took
Blood Swords, Justice Bringers, Hawks, Eagles <-- max them and Green Stingers +1 to armory
I'm implementing all I can to prevent this, I cannot remove them from the leaderboard though, that's up to Kongregate. What we can do is report the players for hacking, it's easy to see which ones have too.