none Fluorescence and medium blue what's the differenceFluorescence – Fifth criteria you need to consider other than the 4Cs

What is Fluorescence in a Diamond?

Diamond with fluorescence, contain particles that emit a soft coloured glow when exposed to ultra-violet lighting (UV-Light). There is a tendency to emit such glow, under ultraviolet (UV) rays from natural sunlight and fluorescent lamps. Such glow could emit a bluish or yellowish light. In certain cases, strong blue fluorescence can cause the diamond to appear milky or hazy. Fluorescence in the diamond are categorise to faint, medium, strong blue and very strong blue.

Does Fluorescence affect Diamond’s value?

Nearly 30% of the diamond in the market, exhibit fluorescent properties under ultraviolet light source. Prices of diamond varies from the 4Cs(Carat, Colour, Clarity and Cut), and from the degree of fluorescent. Some consider fluorescent as a negative characteristic, as such they command a lower price as compared to non-fluorescent diamonds.

Fluorescent can be an advantage or disadvantage to different colour grade of diamonds. In the colourless (D, E, F, G, etc), the diamond tends to look blur or milky. As for lower colours (I, J, K, L, etc.), they appear more colourless to white.

Purchase a Diamond with Fluorescence?

  • Verify the diamond GIA certification and physical diamond under UV-light source.
  • Same as coloured gemstones, view the diamond under natural daylight, as sunlight contains UV rays.
  • Some fluorescence might exhibit yellow, which might further intense the lower colour (H, I, J) grade diamonds.
  • If price of the diamond is the top priority, compare both fluorescence and non-fluorescent, of similar quality in order to decide whether you can see any difference in colour or clarity.

Customised a Diamond ring for a proposal?

Looking for an customised engagement ring? Whether is the 4Cs(Carat, Colour, Clarity and Cut), or fluorescence in the diamond. It boil down to your main priority of an ideal diamond you have in mind. With a lower grade colour (H, I, J), we   custom made  the ring in natural white gold, as we take into consideration on the yellow in the diamond. This is one of the many details we look into in every bespoke jewellery.



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