Thread: Coticule Layer ID please

Dear Coticule users,

for some reason i was not able to start a new thread on coticule.be any more.
I'd like to identify the layers of 2 coticules i've recently purchased.

Hope you can help me assigning them to the layer/vein.

I've taken a picture of them together with other my coticules, which i already know.

The both triangual once on the bottom are under question.

I'm quite sure both of them are recently mined, the shallow I've purchased as "new" from sharpening shop on ebay, the bigger one - from a forum - member here in Germany.

The very shallow triangular one was purchased first, originally I was thinking its from La Grise vein, but as I had a bigger triangular one in my hands I got some doupts...
Both of them have has some grainy looking surface but with following differences:

The shallow is absoluteley smooth to the touch, feels like a polished glas, none of other my coties does feel like that. Its grain also looks significantly finer compared to the big-triangular one but still much more grainy compared to my La Dressante and la Petite Blanche. it has also more yellowish-orange color to it. While honing i feel a very good draw/sticking/friction. It does very little auto slurry while honing, I can only recognize the autoslurry by looking he edge under the micriscope, the edge shows some fine sporadic scratches among the polished surface. its quite slow on water and moderately fast on slurry.

The large triangular looks extremley coarse, under the loupe its surface reminds me to a sand dunes in a desert. The surface also feels quite rough to the touch. At its wider side its grain is finer and at its shallow side the grain looks significantly larger. The razor does also feel rough while honing but still leaves a very fine polished edge. Its super slow on water, no way to get the water dark using lightest finishing strokes, I can only see some shallow black line on a tissue after whiping the razor off. On slurry it is moderateley fast, maybe on the slower side.

Following pictures were taken by my mobile through a 20x magnification glas.
The Slim triangular's surface:



The wide side of the large triangular one:



The shallow coarse side of the large one:



Just to compare, the surface of my Coti which i've been told is a La Dressante:



And the finest-surface of the La Petite Blanche:



Some additional pics:
here are the only both stones dry:


wet:


slurried:


Oh yes, the large one has also some barrely visible greyish like-layers os so running diagonal to the surface (also seen on the wet picture):



And on the sides of the large one I can see some pink/orange colorations and some black lines:




The shallow one has some whitish dots:


Would realy appretiate your help

Thanks in advnace

Philipp