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 2006 to April 2008
Fig. 6b Weights of the famous vibrant red spinels from Tanzania. The spinels are of extremely beautiful vibrant pinkish-red to pure red colors. Faceted Spinels of over 30ct have been tested and have been awarded with the “Magnificent Platinum award” of GRS. A comparison with the rubies shows that these spinels do occur in about 3x larger sizes than rubies which just emerged recently.
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Copyright 2008 © GRS, Dr. A. Peretti
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