Pink diamonds range from light to fancy, intense and finally vivid, which is the highest grade. Bennett reveals: “It is more and more important for collectors to make sure they have certificates for diamonds, and in particular a report from the GIA, because ultimately, the colour grading that the organisation gives is the most important.”

Hue is so crucial in this niche market that it’s even recommended that collectors sacrifice clarity and size for a better colour quality. One reason for this could be the tricky and sometimes subjective process required to identify precise shades.

Stephen Wetherall, CEO of Australia’s mining company Lucapa Diamond, explains: “Estimating the exact shade of a coloured diamond is not that straightforward, even for an expert, let alone a normal consumer. Not everyone sees the same intensity of colour, and pink diamonds regularly have a second colour.

For instance, you could have a browny pink or an orangey pink. Generally, two-colour pinks are sold for less than single-colour pinks. Clarity, which in a white diamond is very important, tends to be less so in a fancy coloured diamond with a very strong colour. There is also a large price difference between a fancy vivid and a fancy intense pink diamond.”

The most valuable pink diamonds practically impossible to find in the market are Fancy Vivid Pink Diamonds certified by GIA.

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