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David Weinberg Discusses Color
https://gemologyonline.com/Forum/phpBB2/viewtopic.php?f=86&t=25554
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Author:  Barbra Voltaire, FGG [ Tue Feb 11, 2020 1:13 pm ]
Post subject:  David Weinberg Discusses Color

David Weinberg, GG, discusses the definitive factors responsible for color in gemstones and how we perceive it. In our Relics & Rarities section, we feature some unusually transparent bluish green chrysoprase from the Yerilla deposit in Western Australia.

http://www.multicolour.com/newsletters/ ... b-2020.pdf

Author:  Isi [ Thu Feb 13, 2020 5:29 pm ]
Post subject:  Re: David Weinberg Discusses Color

Interestingly, I have attended yesterday a very interesting conference from Pr Emmanuel Fritsch on the same subject (how to describe colors in gemstones) and explaining very clearly why gems' colors cannot be faithfully reproduced on photos, and why they cannot be reduced into percentages and figures.

Author:  Barbra Voltaire, FGG [ Thu Feb 13, 2020 9:22 pm ]
Post subject:  Re: David Weinberg Discusses Color

Very interesting.
Dr Emmanuel Fritsch is one of my most respected people in our industry.
Is there a corresponding article with the talk?

Author:  Isi [ Fri Feb 14, 2020 10:12 am ]
Post subject:  Re: David Weinberg Discusses Color

I think there will, in of the next issues of our paper Revue de Gemmologie. It will be in french though and I doubt you can see it online. If you like Barbra I can send you a scanned copy when it comes out.

Author:  Barbra Voltaire, FGG [ Sat Feb 15, 2020 1:29 am ]
Post subject:  Re: David Weinberg Discusses Color

That would be super.

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