Green Stone ID...

After searching previous threads can this small stone be identified?

• Stone lapped and chamfered. This is Hard stone.
• Slurry raised w/ DMT1200 Greenish white tint
• Test razor shows darkening of slurry after 15 to 20 passes. Cuts fast.

Very nice feed back. Surface of stone has smooth glass like transition
Test pending to see if this stone it will improve edge after 8000 grit stone with water and or oil. thank you
Mike
http://i.imgur.com/UiKny.jpg

http://i.imgur.com/f6mwF.jpg

http://i.imgur.com/JlucN.jpg

I don't know, but it is a beautiful looking stone.
Could it be slate, even though it is so smoothly cut?
I have a greenish piece of slate from the British Isles, that produces slurry that exact color.

Jade perhaps?

well its not jade. modine you say its hard, hard like a cf ? the texture i'm picking up from the pic it looks to be some kind of slate does the stone fall some where around the 10k mark ?

Some think it's a Cutler's Green:
Attachment 86677

Others call it a CF.
Yet others think it's Llyn Idwal.
The type has even been called Tam O'Shanter.

For these jade coloured, speckled, glassy hones with a slight translucency, as seen especially well in flakey cracks which run at small angles to the surface, I keep it at Llynn Idwal.

15cm Natural Knives Sharpening Whet Stone Brand New | eBay

Looks a little like this one though too doesn't it?

Quote:

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Originally Posted by regularjoe

15cm Natural Knives Sharpening Whet Stone Brand New | eBay

Looks a little like this one though too doesn't it?

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no I have one of these. I haven't had the time to test it on a razor as of yet but the surface texture and colour is vastly different.

If anyone wants to try this for fun the surface is VERY and I mean VERY rough, not lapped straight from the saw ^_^

Can you show detail without slurry and sides as well please? So far I would say LI.

Quote:

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Originally Posted by Oldengaerde

Some think it's a Cutler's Green:
Others call it a CF.

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Olivia initially thought it was a CF and added it to the SRP wiki as such. Later she realized it couldn't be a CF and decided on calling it a Cutler's Green. There wasn't much or any talk about Llyn Idwals back then otherwise she might have chosen another name for it.

I also think Modine's stone could be a Llyn Idwal.

modine does water absorb into the stone ?

Here are some more pics. Hirlau, it might be slate. I don't know enough about the British stones.
MIke

http://i.imgur.com/2iYFr.jpg

http://i.imgur.com/6r7Os.jpg

http://i.imgur.com/BoE2V.jpg

http://i.imgur.com/8oi8o.jpg

Nice solid looking stone.

It looks as if it might be some sort of welsh novaculite like LI, but it is hard to tell, particularly when you realise that the vein of rock that gives rise to these hone stones is very long and is either crossed or runs alongside an igneous vein of mainly hornblendic rock that alters the slate on either side of it by metamorphosising it into something else. Even then, the metamorphosed product varies - from very crystalline to not very crystalline for instance. The change is gradual. The practicality is at what point do you give it one name and then decide that it is something else?

The cutlers green was supposed to come from a junction like this. If you took a section through it and cut it into hone sizes it would gradually change from slate to granite. As the igneous layer is approached, the slate is changed - gradually - so the look and characteristics change. Cut into it in another direction and it will look entirely different.

A mildly figured vein of CF is an instance. Some of these hones exhibit very little red colouration. If cut between the characteristic swirls would we still know it as a CF or try to ascribe a different name to it? Even the quarrymen who mined it saw distinctions, some were grey/olive green drab colour, some were bright mossy green with the well known red swirls and black dots. Obviously the strata changed - gradually.

Some of the tams exhibit this sort intermediary appearance too, although in use they have the characteristics of tams and not LIs. These things were laid down over vast periods of time during which climate and topography changed dramatically. They were not produced all at once in a factory, so they do not all look the same. Something that was initially deposited by water is characterised by what that water had in it - during this vast time there may have been ice melting and washing different deposits into river beds as it carved different courses through the land, volcanoes spewing ash into the air which was deposited into the strata which was being laid down, small stones and coarse rock fragments thrown in by earthquakes, volcanoes, wave action - all sorts of things that are not of a continuous nature.

It really isn't any wonder that we cannot identify some of these hones by using a simple comparison to known examples. We really need much more precise data, sampling and analysis - and although scientific data does exist for some of the hones we are interested in, it is of too sparse a nature and too focused on other matters to be of much use.

We have already been presented with a conundrum as regards Oldengaardes post re: cutlers green - namely 8k? If was confused with a CF, again - 8k? If it was confused with an LI - again, 8k? Obviously the hone was used and found to approximate that grit rating, so it is a hybrid of one of them at best.

Sometimes it is just impossible to say what the heck it is.

Regards,
Neil

Modine, I have exactly the same hone of yours, mine seems to have been at least 6" inches in length and 2" inches wide, with a thickness 3/4" inches.
Mottled green surface with black speckles, harder to lap than a coticule, with a cream/light-mint green slurry. One end was broken, so I could see the layers of slate, thus made a 5" inch hone with a slurry stone. If you look all over your hone with magnification, have you seen any "gold" deposits/inclusions?
Furthermore, I was told the original owner of my stone was a 90yr old machinist in the U.S, and his machinery was from the 50's..so stone could have been much older and passed on.

I have found it left a hazy/matt finish that was also shallow/burnished/matt-polished in depth of finish and increased keenness from finishing on water with a coticule.

Modine, this thread http://straightrazorpalace.com/hones...een-stone.html which you have read before may help. The first set of photo's are not bad, yours are much clearer though. The second set of photos on the link, have too much flash. The width of the hone in the link gets wider at one end as does my hone.
How have you found the shave from the hone, as I haven't done a full shave test as of yet?

I have one just like this. I posted it on a thread someplace. and when its properly settled, it gives Fantastic edges! It does have a learning curve though. BEST edge was achieved honing under running water. a bit of dish soap and water on the surface works too, but not as well IMO

It’s a beautiful stone that I will use in my natural stone progressions. I expect certain steels to respond better on this type of natural stone. This size stone works well in your hand for more control.

Idwal, is that pronounced “Eyed”-wal or “Id” wal?

MIke

Mike, it's pronounced the latter way 'eed-wal.'

I have four stones which closely resemble yours, but none of them taint the slurry after 15-20 passes as yours does, being far slower. They are hard stones, some more speckled than others, often with harmless blue inclusions, one having a gold inclusion as I read another member above having found.

One which I have is a very good finisher, the others I have barely tested. I can say they all improve a Naniwa 8k edge.

I found it to be similar to my Black Arkansas stone, in that after you flatten it, it opens up the surface, and does not finish as well. You need to run a flat piece of hard steel over it a few times to get the surface to "glisten" and thats when you can get a finish to rival an Esher.

I use a machinists parallel block, but just using razors will eventually bring it smooth too.

It reminds me very much at this stone of mine which, after some research, I believe is most likely a Llyn Idwal.