Unraveling the luminescence secrets of turquoise nucleus cultivated pearls.

ABSTRACT: Turquoise nucleus cultivated (TNC) pearls represent a distinctive variety which are distinguished by their unique nucleus and remarkable aesthetic appeal. In contradistinction to the common pearls, which were formed by a shell nucleus, TNC pearls are characterized by a nucleus composed of a turquoise-like mineral. This study presents a comprehensive analysis of the spectral characteristics of TNC pearls. It reveals that TNC pearls grew in seawater, as indicated by the peak area ratio of Sr to Ca in X-ray fluorescence data. Additionally, the relatively subdued luster of TNC pearls is hypothesized to result from the specific nature of their nucleus material. It is noteworthy that the nuclei of these pearls are not composed of natural turquoise because their infrared spectrum exhibits charact

SUBMITTER: Li Y 

PROVIDER: S-EPMC12328744 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature