Diamond Fluorescence
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Most people know that diamonds come in a wide range of shapes and sizes. Many people also know that the diamonds vary in their clarity and their colour. However, much less well known is the fact that around one third of diamonds exhibit a natural phenomenon known as diamond florescence.
Diamond florescence is seen when a diamond glows if it is placed under an ultraviolet light. In most cases, diamond florescence is blue in colour, though some diamonds glow green, or yellow or even red. Diamond florescence is caused by the presence of trace elements within the structure of a diamond. Blue diamond florescence is caused by the presence of nitrogen for example.
The intensity of diamond florescence varies according to the concentration of these trace elements. In most cases florescence is not strong enough to have an obvious effect under normal lighting conditions. However, stones with strong florescence, known as 'over-blues', can have a slightly milky appearance. This is considered undesirable and therefore these stones are heavily discounted.
In general, florescence is best avoided if possible. One possible exception is if you are purchasing a diamond with a slight yellow tint to it. In this situation, a little bit of blue florescence, while invisible in normal light, has the effect of cancelling out some of that yellow colour, and giving the impression of a whiter diamond.
While it is advisable to purchase certified diamonds (diamonds which come with a certificate from an independent diamond grading authority) we also recommend that clients come and assess diamonds themselves in person if possible. Comparing different diamonds, and discussing the relative qualities and merits of different stones with your jeweller is the best way of ensuring that that you are getting a diamond you will be happy with before you part with your hard earned cash.
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Author Resource:-
Want to know more about Diamond Fluorescence ? Look here for an easy to use guide to Diamond Fluorescence.
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By :
Gareth Hoyle
Submitted
2010-11-02 04:11:40 |
Article From Article Mayhem
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