Here is one of those boxed coticules.
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Here is one of those boxed coticules.
In my experience, the very light almost whitish coticules that are completely featureless like that (the yellow part of the stone having no pattern like woodgrain or etc. I mean) are outstanding stones. The pinkish/reddish hued ones are usually very fast also. I only have a handful of coticules left but the good ones are fantastic.