Diamonds and the 4Cs: what affects value
Diamond assessment depends on more than size. The 4Cs—carat weight, colour, clarity, and cut—organise the description, while final value also depends on documentation, condition, and market demand.
The four characteristics
Carat describes weight. Colour, clarity, and cut describe different properties. Cut is not only shape; it also concerns proportions, symmetry, and polish, which affect appearance.
Why inspection matters
Appearance alone cannot confirm quality or origin. The stone, setting, available documentation, and treatment indicators should be considered together. Do not assign a final value without adequate inspection.
FAQs
- Is a larger diamond always worth more?
- No. Value depends on the 4Cs, quality, documentation, condition, and demand. Weight is only one factor.
- Is a certificate enough?
- A certificate helps describe the stone, but it should match the diamond and be considered alongside the setting and condition.
- Can photos provide a final appraisal?
- Photos can support an initial conversation, but not a reliable final appraisal. The stone or jewellery must be inspected.
Related articles
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- Ruby, emerald and sapphire: how they are appraised
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