Skin Care

A question I am often asked is what exactly is the fluorescent specification in diamonds and is it good or bad to have?

We at www.JewelleryWebShop.co.uk believe that it is and will always recommend them.

Well to answer this question one must understand what it is that makes a diamond fluoresce when shown under ultra violet light.

Diamond formation

Diamonds were created under extreme temperatures and pressures.

During their formation some carbon deposits were subjected to these conditions and the diamond crystal was formed.

In certain cases, some gases were present and were, within the reaction, included in the formation of the diamond crystal.

It is in fact these gases which cause the fluorescence within the diamond crystal and depending on the amount of gas trapped, the diamond will fluoresce in different way.

Diamond grading

The fluorescent parameter is shown on a diamond grading report as ‘nil’, ‘faint’, ‘medium’ and strong/distinct.

Fluorescence in diamonds is mostly within shades of blue, however, other colours are possible, ie: green, orange and yellow depending on the kind of gas trapped within the crystalization of the diamond.

A good or bad thing

Is it a good thing you may ask.

Well indeed, in most cases it will not affect the brilliance/sparkle or light refractive qualities of the diamond at all and in some cases the beauty of the cut diamond will benefit from its presence.

If the fluorescence is ‘strong’, it will in fact enhance the colour of the diamond especially in the colours from ‘I’ colour downwards as the blue tint, under sunlight, will show a better colour than the diamond’s actual specification, the diamond will look, therefore, WHITER.

Unfortunately diamond grading reports do not specify the intensity of fluorescence within the ‘strong/distinct’ specification. In very rare cases the gas deposit can be so strong that it causes a ‘cloudy’ effect within the diamond which will not help the light refraction element of the cut diamond and will affect it.

One should always avoid a diamond with this type of characteristic, however, having said that, the diamond laboratory would have penalised the clarity in order to compensate for it.

Conclusion

Fluorescence in a diamond is rare when compared to none fluorescent examples so diamonds of ‘strong’ fluorescence are very rare indeed and should be sought after rather than not, especially if a low colour diamond is required.

Hopefully this explanation will answer any of the issues surrounding the fluorescence in diamonds.

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