The rock is a good 8x8 inch by 3 deep band is about a mm running right through it. Found with a gold bug pro and checked with a minelab gold monster both said gold. Found at the goldfeilds
Detector went nuts and it was this rock. It never did this before
Covered in crud so i pocket it for later thinking a nug could be stuck on it. Found this after cleaning. Discrimination on the detector was spot on. Went back to the spot and so many signals...so many rocks.
I use a 4200 digital control dremel (it makes a difference stable motor control) 10-15krpm with a diamond wheel. Then I finish with 350, 600, then 800 wet and dry then leather and pink polishing powder. I learned off a great YouTube video on hand shaping with sandpaper, using a folded towel...