The division of the sciences into various subjects, such as biology, chemistry, geology and physics, is convenient for their study, and for teaching purposes.

Indeed, these subjects are themselves so vast that they are further subdivided into many sections. However, the division into apparently separate subjects is, to some extent, illusory and the overlap into other topics can vary considerably. To study any of these subjects effectively, the student should have, at least, some knowledge and understanding of the related sciences.

Gemology is no exception to this and a basic understanding of the geology and mineralogy of gemstones will be helpful.

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