variables:
    drop::%player% = false
    
options:
    diamond: 0.001%
    emerald: 0.0012%
    gold: 0.01%
    iron: 1%
    coal: 5%
    
on mine of stone:
chance of {@diamond}:
give 1 diamond to player
chance of {@emerald}:
give 1 emerald to player