[1.11.2]GetDrops for a Metadata block

[olrustyeye]

I'm currently working on a bit of code to access the drops for Granite, Diorite and Andesite. I little secret: I'm trying to make a geology type mod where theres a chance of dropping certain things while digging in the mines. 
Anyways. Here's my code right now. 

https://pastebin.com/GEV33S4j
Here's what I've done for tests
Created a new itemstack accessing the Granite by the metadata. It works applies to ALL stone rather then just granite. 
I've tried using the name Granite. Doesn't work either. 
I can't use idea because I believe (And I may be wrong) that the reason for meta data is many blocks under ONE id. 

I feel like the answer may be pretty simple. So I'm hoping someone can tell me I'm a noob and to use minecraftmagic.dowhatIwant(Granite);

 

[Draco18s]

You need to check the stack metadata. Creating a stack, then decomposing it back to an item only checks the item.

[olrustyeye]

37 minutes ago, Draco18s said:

You need to check the stack metadata. Creating a stack, then decomposing it back to an item only checks the item.