Here at LegionRaid the admin likes to mess up with Ore spawning rates, in an epic way.
There will be periods when an ore will be more common than another.
There will be periods where diamonds will be unobtainable, but this lack will be compensated with other ores spawning a lot more.
We call these periods "Eras".
I Era - The Iron Era - February 2020
Diamond is unobtainable, gold is very rare. Other ores are found in normal quantities. Iron is very abundant. This era will last the whole month of February 2020.
II Era - [Unknown]
We don't know what will come next