New natural.

I received what I thought was a vintage coticule several weeks ago. This assumption based on the shape, it being set into a hand carved paddle in addition to its pre-lapped dirty yellow colour. Upon lapping, it revealed blotches akin to army camouflage, the slurry turing the colour of stone. Although it appears white in the pictures, the slurry is in fact the colour of the stone when it gets thick enough.

I'm not sure if this is a Thurry or a Schwedenstein. I consider the latter as it is very thin as are all Schwedensteins, and blotched, though it could be something else entirely. I have shown it next to my Schwedenstein in one of the pics. Either way, it's a nice finisher though I need to test it out more. I highly doubt it is a coticule. Opinions are welcomed :)

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Interesting stone, Scipio!

Not sure what it is, but I do have a les latneuses composite coticule that looks a bit similar. It is hard and gives an edge unlike that you would associate with most coticules.

Regards,
Neil

Thanks Neil. I hadn't considered that it may be a hybrid coticule. It isn't any harder than a coticule or Thuringian or if it is, it is not noticeable.

It looks like a Coticule to me. These 3 Coticules I have look similar and produce funky coloured slurry as well. I backed two of them with slate.

Attachment 97539

Attachment 97543I would not be surprised by Coti as I have one with crazy colours too.

Congratulations Scipio it’s a good looking stone. I would say a coticule too. Some coti’s have a prominent layering effect. As the surface wears down you expose different strata coloration and grit..
MIke

http://i.imgur.com/Y7Yax.jpg

I'd say Coti too, with some Les Lat in it...Hybrid....

BTW, Mate...Feel free to send him "Across the pond"

Hybrid? What the, who the hell is crossbreeding cotis?

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Originally Posted by robellison01

Hybrid? What the, who the hell is crossbreeding cotis?

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If the crossbreeding in incomplete, is it considered cotis interruptus?

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Originally Posted by robellison01

Hybrid? What the, who the hell is crossbreeding cotis?

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How do you think that we now have a welsh thuringian?

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Originally Posted by Martin103

How do you think that we now have a welsh thuringian?

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Please don't dig into it it was just a holliday romance.

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Originally Posted by adrspach

Please don't dig into it it was just a holliday romance.

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"...And she'll never know about it." HA!

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Originally Posted by adrspach

Please don't dig into it it was just a holliday romance.

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(with apologies to Marlowe's Barabbas) "...but that was in another country, and besides, the wench is dead..."

As everyone thinks it's a coticule, my mind has warmed to the idea. I never thought it was one as the texture looks so different to my coticule. This is more of a glassy finish with a slight shine to it which increases the more I use it. It is very thin with no sign of BBW anywhere, again a reason I dismissed the possibility of it being a coticule. I tried to raise slurry again on it and it is in fact harder than other coticules, the slurry only turning a hint of grey after numerous circles with a razor. I therefore believe it to be a slow cutter and a fine finisher than other coticules, but later testing will be conclusive.

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Originally Posted by Scipio

As everyone thinks it's a coticule, my mind has warmed to the idea. I never thought it was one as the texture looks so different to my coticule. This is more of a glassy finish with a slight shine to it which increases the more I use it. It is very thin with no sign of BBW anywhere, again a reason I dismissed the possibility of it being a coticule. I tried to raise slurry again on it and it is in fact harder than other coticules, the slurry only turning a hint of grey after numerous circles with a razor. I therefore believe it to be a slow cutter and a fine finisher than other coticules, but later testing will be conclusive.

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Les Latneuses, aka 'hybrid' coticules don't really have a BBW layer - they consist of a 'hybrid' layer sandwiched between two coticule layers. The 'hybrid' layer is not simply a mixture of coticule and bbw: sometimes there are blueish veins and even black manganese dots, but in appearance it is glassy, browns/greys/muddy yellows predominate and it is very hard taking on - as you noted - a sheen or shine.

One such has been found with quartz inclusions and the owner likens it to novaculite. Mine is an exceptionally good finisher - it is slow, but gives a very crisp, shiny edge. I haven't got a full coticule/hybrid/coticule sandwich as one of the coticule layers is missing, but the coticule layer that remains is streaked with red bands and cuts very fast with slurry, although it slow with water and gives a fairly decent edge - not as good as the glassy hybrid layer, though.

Here is a slip of hybrid layer from a posting on another forum:

Attachment 97606

Mine is very similar in appearance, but luckily is of a decent size.

Regards,
Neil

Thanks Neil, it is somewhat similar, the green parts being the same. Mine is a good size too, 8 x 1.5. Unsure whether to keep in the paddle or to glue to slate.

yep... I vote coti too. regardless, it should be a great pre finisher/finisher

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Originally Posted by Scipio

Thanks Neil, it is somewhat similar, the green parts being the same. Mine is a good size too, 8 x 1.5. Unsure whether to keep in the paddle or to glue to slate.

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I would leave it in the paddle, why risk damaging it to glue it to slate?