Turkey produces the world's best meerschaum. These are generally white, but can come pre-coloured. Sometimes an unbleached wax finish is applied which results in yellow/honey tones.
African meerschaum (from now closed mines in Tanganyika) is poorer quality and because it is rarely pristine white, are usually precoloured.
I have a few African meers which I like be caused they are more robust and stand up to less gentle handling.
An example of a well-coloured 1896 meerschaum cutty. The stem is a replacement
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