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Nikiforov
Vladimir O.
D.Sc., Prof.
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DISCOLORATION OF NATURAL SAPPHIRES
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Abstract
Spectral and luminescent characteristics of the faceted crystals of natural sapphires have been investigated.
Samples were exposed to technological methods of processing that made it possible to modify selectively the optical density of sapphires in definite spectral regions. Most effective techniques of discoloration of sapphires have been showed.
Keywords:
natural sapphire, elevation, spectral-luminescence characteristics