Photoluminescence Spectra of Emeralds from Colombia, Afghanistan, and Zambia by Brian Thompson. See Research Below
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 Post subject: Gem Spectrum resources
PostPosted: Wed Aug 17, 2016 3:54 pm 
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Can anyone recommend a good reference book for spectrum or an online source. I finally worked out my lighting issues but now it would be great to have a library of spectrums.


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 Post subject: Re: Gem Spectrum resources
PostPosted: Wed Aug 17, 2016 11:05 pm 
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Can I presume you are using a handheld spectroscope like an OPL?
https://www.geminterest.com/spectlist.php

Let us know if this works for you.


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 Post subject: Re: Gem Spectrum resources
PostPosted: Thu Aug 18, 2016 4:15 am 
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and here : http://www.gemlab.co.uk/index.html

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http://www.gemsdat.be/engels.htm


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 Post subject: Re: Gem Spectrum resources
PostPosted: Thu Aug 25, 2016 10:46 am 
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Thank you! This helps. :D


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 Post subject: Re: Gem Spectrum resources
PostPosted: Sun Aug 28, 2016 7:21 am 
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I like "Gemmology and the Spectroscope" by Basil Anderson. Well written, comprehensively illustrated and recently updated. Not cheap, but worth the money.


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