@CyanideRose18 Look above ^ at how I rehabbed this stone!
I took another hard look at the back, and I had to agree with you! Then the blackening just had to go.
It took a while to sand down far enough. I was surprised at how hard this stone was!
All the while, I kept repeating to myself something a very wise man once said to me. (My neighbor)
“It’s mine and I’ll f*ck it up if I want to”
Luckily, the turquoise gods were with me on this, and it worked out ok.
Haha!
That’s awesome and the stone came out gorgeous 
Honestly I will sandpaper a stone in a heartbeat.