Green Stone from UK, possibly a Llyn Idwal?

Dear SRP community,

today I've came accross a green stone, comming from UK.
The stone has been used with oil before.
Its surface looks quite coarse has also lots of black small dots but it's surface is very smooth to the touch (after lapping :))
Under DMT plate it creates quickly a fine white-greenisch slurry, the releasing speed i can compare to thuringian hones.
First very short honing on slurry shows it is working quite fine, I guess it can be a prefinisher, may be I can even finish on it...

Size: 23cm x 57mm x 17mm

Here are some pictures

The front side dry:
Attachment 315807

The front side dry:
Attachment 315808

The front side whet:
Attachment 315809

Looking from abover to the whet surface some whitish curls shows up:
Attachment 315810

The back side is indeed rough:
Attachment 315811

sides of the stone has some cracks
Attachment 315812

here are some inclusions at 160x magnification (Pics are taken by cell phone through a kids microscope)
Attachment 315813 Attachment 315814


Would realy appreciate you could help me identifying this boy

Thanks a lot in advance

Regards

Philipp

Here are some pics done in the daylight:

Front side
Attachment 315822

back rough side
Attachment 315823

Details on the frot side
Attachment 315824

Wet
Attachment 315825

best regards

Philipp

It doesn't look like a Lyn Idwal to me; Looks more like an Arkansas or some other novaculite. Charnley?, though I've never seen one of those. Nice stone though.

My vote is for Charnley Forest as well. Definitely looks like novaculite under the scope, and the rough cut bottom..

If it is a CF you could use it as a finisher.. or at least try to and see how it shaves.

Thanks a lot,

somehow I was thinking a Charnley Forest must be as hard as glas or as an Arkansas stone, but this one is not.
It does not autoslurry while honing at all but couple of passes by DMT create rich white-greenish but very fine slurry.

It is super fast on slurry and brings a glas-dulled edge back like nothing by leaving a very keen and non-toothy edge.

I need to do more tests but it is at least a great prefinisher.

Are there slate-like softer versions of Charnley Forest around?

Will dive deeper into this stone later and will post the results here

Thanks & BYe

Philipp

Nice pics:)
Your stone is a LI.
Dark green dots, layers, small "bubbles" with a bit golden\silver tint on the surface - everything points to a LI.
And in common LI is softer than CF.
Photo samples:

LI --- CG:
https://sharprazorpalace.com/hones/1...ml#post1485870
https://www.flickr.com/photos/153093...57696387540181
(RUS) LI https://www.myabrasive.ru/forum/viewtopic.php?f=17&t=20
(RUS) CG https://www.myabrasive.ru/forum/view...php?f=17&t=241

vs Charnley:
https://sharprazorpalace.com/hones/6...ing-stone.html
https://sharprazorpalace.com/show-te...est-stone.html
https://www.flickr.com/photos/153093...57713404949877
(RUS) https://www.myabrasive.ru/forum/viewtopic.php?f=17&t=12

And - see Grinding and honing part 3 - https://bosq.home.xs4all.nl/

Hi Oleg,

Thank you very much, your LI sample pictures on Flickt do match exactly to this hone.

I‘m certain it a Llyn Idwal.

Best Regards

Philipp

Its Lyn Idwal 100%
I have many. Its not CF (which I have many of aswell)

Quote:

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Originally Posted by Frameback

Its Lyn Idwal 100%
I have many. Its not CF (which I have many of aswell)

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Thanks a lot, Frameback

Looks like a LI to me too. Cool looking stone and possibly a older stone because the back is not finished. Most LI's I have seen are finished on the front and back although I have seen a few with unfinished back. Cool find!