Four Treasures Reference Database
Record No. 28184
Unheated pink sapphire from Madagascar with OH-related 3232 and 3185 cm⁻¹ FTIR bands
Journal Article
Krzemnicki, M.S., Wang, H.A.O., Sun, Y., Beney, I. and Wälle, M. (2025) Unheated pink sapphire from Madagascar with OH-related 3232 and 3185 cm⁻¹ FTIR bands. Journal of Gemmology, Vol. 39, No. 8, pp. 734–736.
Sinkankas/Born No.: NIS/NIB | RWHL*
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gems, corundum, treatments.4, heat treatment detection, FTIR, 3232
Describes the appearance of a 3232 FTIR peak in a pink sapphire from Madagascar that appeared to be unheated. This peak is typically associated with gems that have been heat treated.