Thread: Multiple stone id help needed

Hello all good people. I have few stones that I need to help identify. I would at least know is they high or low coarse stones.

1. Stone is glue to piece of wood. Very thin stone and very hard when lapped. Slurry is made on DMT325. Slurry kind of chocolate color, light brown.

2.Second stone is very, very hard and heavy. Feels like more coarse that I see before. Strange, but when is spray with water I can see many crystals and structure is like in 3D movie. Silver, gray, and some why particles.
Slurry however is brown and thick.