[Jewelry making - Article 00009] - Re: [Orchid] Gemesis laboratory grown diamonds

[Nick]

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http://www.ganoksin.com/orchid/archive/200503/msg00905.htm

>            I am really confused by your statement " the fact that
>     these lab created diamonds typically come in shades of yellow was
>     interpreted as being a virtue by comparing them to canary yellow
>     diamonds. " Fancy colored diamonds are rarer and more valuable
>     than Near Colorless diamonds. Synthetic diamonds are graded on the
>     same scale. A diamond that is Z+ yellow color IS a canary yellow
>     diamond, so why should it not be compared to a canary yellow
>     diamond, and how is that not a virtue? They are making pink and
>     blue diamonds as well, again - more valuable per carat, easier to
>     make, very marketable these days. 

Epaul,

    This thread has been very emotive and many views have been made for
    and against diamonds. I personally love diamonds, mainly from a
    gemmological aspect mind you, and think they are unique in so many
    ways, that have already been covered or touched upon in the various
    posts. 

    I just wanted to 'review' one point you made about canary diamonds
    in the highlighted passage above. Not all Z+ yellow diamonds should
    be termed canary diamonds. Fancy, yes, but canary, no. Owing to the
    distribution of nitrogen atoms in the crystal lattice only diamonds
    that are of a strong yellow AND are type Ib should strictly be
    referred to ask canary diamonds. I am sure I will be corrected if I
    am mistaken, but that is my understanding. Most of the yellow
    diamonds that exist fall into the type Ia category and this is
    further divided into types IaA, IaB and IaA/B! Type I stones make up
    over 95+ diamonds that exist, so you can see that TRUE canary
    diamonds are really rather rare ;-) 

    Hope that is of interest and helps to show why diamonds are so
    interesting in my opinion. There is always two sides to a
    subject/discussion/debate and coin ;-)

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