Thread: Help Identifying my stone

Picked this up for $10. Seemed like it could be worth it for a diamond stone - although I don't know much about them.

The box is marked #1500 - which, after feeling the stone seems WAY to low. The stone almost feels like a finishing stone. Does that mean it's completely worn? Or is that just how diamond stones feel?

Otherwise, does anyone know what kind of Diamond stone this is?