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		Slraep
Guest
Here is an intersting page about how a labratory identifies certain 
pearls by their pigments spectrographically. Example is of the pinctada margaritifera and the pteria penguin.
http://www.gaaj-zenhokyo.co.jp/researchroom/2005/2005_11-02e.html
Slraep
				
			pearls by their pigments spectrographically. Example is of the pinctada margaritifera and the pteria penguin.
http://www.gaaj-zenhokyo.co.jp/researchroom/2005/2005_11-02e.html
Slraep
 
	 
 
		 
 
		 
 
		 
 
		