It's been my week for Coti's

Dad went to the flea market in The city this weekend, he usually picks up any stones for me if they are a few dollars. Over the phone he said he got a two tone stone that looked glued together,

Then I finally got to see it today after visiting him. It' 2.5 x 7 and looks and feels like a coti with slate back. Its more white than yellow though. I feel liked won the lottery this week. I have had much better luck at the flea markets than all the antique store. Been searching hard and heavy at the antique malls and have not found crap. Flea markets for the WIN...

Whatever it is I like it. It's super fine.

http://img.photobucket.com/albums/v4...cc48c5f300.jpg

Updated photos after getting home and laping.

This is in comparison to my other two Coti's
http://img.photobucket.com/albums/v4...1e79dac598.jpg

Slurry using my DMT mini
http://img.photobucket.com/albums/v4...65f07f26ff.jpg

Looks like slate to me. Lapps like slate and smells like slate.
http://img.photobucket.com/albums/v4...0994c46ae4.jpg

This one has some red 'lines / dots' in it. None of the other Coti's have that, so ??
http://img.photobucket.com/albums/v4...6d1e3a0599.jpg

The end.
http://img.photobucket.com/albums/v4...9b47637c46.jpg

7 inches of pure joy.

http://img.photobucket.com/albums/v4...d081b43887.jpg

I use to have this kind of stone, it is not a coticule, is man made, when you wet is is smell like cement. When you lap it is like glued to the DMT, but it is a very fast cutting and very fine. I may be wrong, but the chips on the stone look like my stone.

When I get home I will lap it and let you know. It looks whitish/yellow. But I guess the color could change after lapping I will post photos later. It is definetly very very fine,

try to get some better pics up it looks like a soft and hard ark glued together but cant tell for sure .

Updated photos in first post.

It's definetly no Ark'y I have hundreds of arky's in all types and styles. The backing is slate I am sure of that., and other than some red lines/dot's this is identicle to my other Coti's . It does seem harder than the spotted one, but about the same as the one on the left. Smells like my other coti when creating a slurry. Slurry is very easy to create. The slate backing is very very easy to create.

I certainly do want opinions though...

http://img.photobucket.com/albums/v4...1e79dac598.jpg

your right its not and ark and it is slate backed how does it smell when lapping the yellow side does it smell like your other coti's ?

It smells like the one on the left exactly, the spotted one has a more mello smell to me, but very similar to it. They all more or less smell the same, I had my daughter smell all three also, she said the same thing.

I am reading up on the different layers, it appears only a few have red striations, of course with this being purchased at a flea market there is no way of knowing the age, which sucks, it would be cool to have some clue..

If anyone wants to take a lucky shot at the layer, I will read up and google and see if I can pin point it. The closet I can see is La Dressante. But yeah I understand this is next to impossible to know.

Also it tastes like a coti. Lol. My son just pointed out I had white powder on the tip of my nose. I think I have a problem. My HAD is getting real bad,,

i'm not liking those brown/red spots but if it looks like a coti and smells like a coti then most likey its a coti

The stone very much resembles coti. I had one coti with this type of spots, it was used with oil for many years, and it took me a lot of time to clean it.

That's a coticule...I'm 100% sure about that (but that's of course my opinion)
Nice one!

it is not a coti.
if it's a coti then you would exactly know it.
don't you?

I guess I am not following you, i have said it was a coti all along, from the moment I put it in my hands,

I have two others coticules to compare with. I can say I hold them all three together and they are as much alike as can be.

But.
at the same time I value others opinions, and am not stubborn, I would love nothing more than an objective opinion. I will analyze the data and do whatever research it takes to agree or disagree with the hypothesis, That's what I love about natural stones is the difference in opinion and mystery of it all. I am like a sponge soaking up as much info as possible. He who refuses to stop learning will.

As I live in the land of the coticule, I have seen quite an amount of them.
This is certainly one of them. It's in rough shape on the sides, but that doesn't change the fact that it's a coticule.

i have to go on what the op said that it smells like a coti but my gut tells me its synthetic i dont like the red/brown spots the way the chip looks look at the grit in the close up pic !

Indeed, there are red/brownish spots in the stone. Personnally, for me that doesn't say a thing. I have seen coticules with red/brown/black/green spots and stripes in them. About the chip in the stone...it could be from falling on something. But on the picture I can't really tell what grit it is.

If it is making white slurry then it is a coticule.

indian stone which are synthetic make white slurry too

India? Or Indian stone? I have lots of India Stones, it is not one of those. Google found nothing on Indian stone that didn't re-direct to India stone,

india makes a off white slurry i have a lot of aluminum oxide and silicon carbide stones that make white to off white slurry.

My opinion if your creating slurry on an India stone or alumina oxide, then you should just be putting river sand on the stone, I suppose if you're sharpening an axe or a chainsaw it's ok.. but an aluminum oxide "slurry if you want to call it that" will never come near my razors nor would a clean A.O. Stone for that matter. :). If I am using one of my India stones on a knife and it forms a slurry it means it's time to clean/lap the stone and start again or chunk it in the trash.

Back to the coti ID... do you have access to a microscope? You might be able to see the little garnets in the slurry.

Quote:

---

Originally Posted by sidmind

My opinion if your creating slurry on an India stone or alumina oxide, then you should just be putting river sand on the stone, I suppose if you're sharpening an axe or a chainsaw it's ok.. but an aluminum oxide "slurry if you want to call it that" will never come near my razors nor would a clean A.O. Stone for that matter. :). If I am using one of my India stones on a knife and it forms a slurry it means it's time to clean/lap the stone and start again or chunk it in the trash.

---

i had a few mystery hones that turn out to be india stone's i dont use slurry on india stones