So basically a level system?

 

Here's your code:

Code (Text):

1. on break:
2.     event-block is stone
3.     add 1 to {xp.%player%}
4.     give player 1 diamond of sharpness 1 named "&b&lDiamond"
5.    
6. # you do not need to damage the pickaxe as minecraft is already doing that

 

Here you go:

Code (Text):

1. on break of stone:
2.     add 1 to player's level
3.     give player 1 diamond of sharpness 1 without any NBT named "&b&lDiamond"

Please mark the Thread as solved!

 

Code (Skript):

1. on break of stone:
2.     add 1 to player's level
3.     give player 1 diamond of sharpness 1 without any NBT named "&b&lDiamond"
4.     cancel event

To mark the Thread as solved edit the Title of this Thread

 

Code (Text):

1. add glowing diamond named "&b&lDiamond" to inventory of player

 

Yes would be a solution if you only want the glow but like he said he wants the enchantment Sharpness but only displaying the glow effect

 

Oh sorry, I didn't seen this right. My mistake.

 

Please mark the Thread as solved.