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What vein is the 2nd one? I typically avoid cotis with that color and surface pattern like a wood grain as they typically are not pure coticule but mostly a mixture of other sediments and minerals...

Pink coticules are going to be fast cutters that produce a keen and sometimes mellow edge, wood-grained coticules from the la grise vein are going to be slow, but produce mellow results. I'd avoid...

For those saying that a coticule lacks the keenness found in other stones, that may be the case if you finish only on water. If you try soapy water, running water from a tap, talcum powder, oil,...