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Diamonds

Diamonds are described by a small set of characteristics that, once you understand them, make every choice clearer. This section explains what the 4 Cs actually change in the stone you see, why cut does more for beauty than any single grade, how to read a grading report, and how natural and laboratory-grown diamonds genuinely differ. Start with the 4 Cs, then move to cut and light performance, reports, and the natural-versus-lab-grown comparison. Nothing here assumes you will buy from Ralph Jacobs — the aim is that you can choose well anywhere.

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