Thread: An unknown stone.

A few months ago I picked up this stone at an Antique store, for $8, hoping it was a black Ark.

Tapped it out of the box and sprayed with oven cleaner and scrubbed with Simple green. It does look a bit like yours and I suspect mine is a possibly a Charnley Forrest or Lynn Idwal.

It has been soaking in Simple Green for a couple of months and is still releasing oil, and last time I changed the solution it looked more grey, but once I lap it I believe it will show greenish again.

It is very hard, note the sharp edged chip in photo and produces a thin white slurry. I will get it out of soaking and give it a lap and take some new photos later today or tomorrow.