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  • Whitening of pearls

    The latest issue of the GIA info magazine has a piece on whitening and brightening of pearls.
    Author:Pearls A Practical Guide published by Crowood Jan 2021
    www.pearlsapractical.guide

  • #2
    Thanks for posting this article about optical brighteners/whiteners.

    Link to article:
    https://www.gia.edu/gems-gemology/su...ning-of-pearls

    Comment


    • #3
      Originally posted by Pearl Dreams View Post
      Thanks for posting this article about optical brighteners/whiteners.

      Link to article:
      https://www.gia.edu/gems-gemology/su...ning-of-pearls
      Thanks - I'm an idiot!
      Author:Pearls A Practical Guide published by Crowood Jan 2021
      www.pearlsapractical.guide

      Comment


      • #4
        No, only human!

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        • #5
          It happens to me all the time, especially with eMails! "Here goes the document!" and no...I forgot!
          Thank you for the article!
          Douglas McLaurin-Moreno
          Admin to Pearl-Guide.com
          Pearl Farming Specialist
          Follow Me!
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          Your Life evolves in the same way a Pearl grows: with continuous layers of experiences/nacre that add to the Story of your Life on Earth and make you Unique and Beautiful.
          Douglas McLaurin-Moreno

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          • #6
            Very informative, thank you Pearlescence and PD!
            Pattye


            PatriciaSaabDesigns.etsy.com

            facebook.com/PatriciaSaabDesigns

            SO MANY PEARLS, SO LITTLE TIME----

            Comment


            • #7
              Quite interesting. I had no idea about the florescence of pearls. I found it a bit difficult to differentiate between treated and untreated pearls.

              Comment


              • #8
                Originally posted by amti View Post
                Quite interesting. I had no idea about the florescence of pearls. I found it a bit difficult to differentiate between treated and untreated pearls.
                Yes, white pearls and Cortez Pearls display beautiful fluorescence! Thing is that: Black pearls and dyed pearl don't.
                I made this short video on Pearl Fluorescence some time ago...maybe you would like to see it?
                https://www.youtube.com/watch?v=E7tkpeEALGg&t=4s
                Douglas McLaurin-Moreno
                Admin to Pearl-Guide.com
                Pearl Farming Specialist
                Follow Me!
                Instagram
                YouTube


                Your Life evolves in the same way a Pearl grows: with continuous layers of experiences/nacre that add to the Story of your Life on Earth and make you Unique and Beautiful.
                Douglas McLaurin-Moreno

                Comment


                • #9
                  Originally posted by CortezPearls View Post
                  Yes, white pearls and Cortez Pearls display beautiful fluorescence! Thing is that: Black pearls and dyed pearl don't.
                  I made this short video on Pearl Fluorescence some time ago...maybe you would like to see it?
                  https://www.youtube.com/watch?v=E7tkpeEALGg&t=4s
                  Very curious to find out the spectrum of light that goes out of the pearl with the excitation frequency that goes into the pearl. And see if this is the same everywhere.

                  Is that your voice in the video?

                  Comment


                  • #10
                    Originally posted by dobo View Post
                    Is that your voice in the video?
                    I'd wish!
                    Would have had a promising career in radio or for voice-overs. The voice belongs to my friend Charlie Bloomer, he is a retired American radioperson that lives in the American/Canadian community of San Carlos.
                    Douglas McLaurin-Moreno
                    Admin to Pearl-Guide.com
                    Pearl Farming Specialist
                    Follow Me!
                    Instagram
                    YouTube


                    Your Life evolves in the same way a Pearl grows: with continuous layers of experiences/nacre that add to the Story of your Life on Earth and make you Unique and Beautiful.
                    Douglas McLaurin-Moreno

                    Comment

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