Hello! i was wondering if diamond ore is a common vanila item or a rare vanila item! Thank you!' -Benny
Since the only thing that makes diamonds rare is the time needed to mine them, I would imagine they count as common vanilla items - unlike mob heads, beacons, or anything of that sort, there isn't a lot of work that needs to be done to obtain them.
These are any items in Vanilla Minecraft, that are relatively easy to acquire. They may be auctioned in a minimum quantity of 9 stacks. If the item does not naturally stack, the minimum quantity is 9. Full details on every item included must be listed in the OP of the auction. Diamond ore doesn't count as a special item and has to be auctioned in a minimum quantity of 9 stacks.