Well, I managed to snag this from a snipe bid a few weeks ago. Not really cheap but a decent price for what it is.
It appeared to be a Y/G Thury.
After a quick cleanup of box and stone it is indeed a Thury. I'm not sure it is Y/G though.It seems to go more yellow with water. I have never seen a Yellow so any help would be great.
Typical Y/G's the color is almost enhanced with a litlle water, this one seems more yellow wet.
My question is what is the dark color in banding of Thury's? I have seen the discoloration on some but what mineral is it?
It does not seem detrimental in any way.
The edge produced from it is excellent and typical of very good Thury's.
Slurry is white -ish, typical Y-Y/G.









Wet, looks more Yellow,


Slurry,