Raman and Photoluminescence Mapping of Gem Materials
| Autor: | Artitaya Homkrajae, Ziyin Sun, Garrett R. McElhenny, Sally Eaton-Magaña, Christopher M. Breeding, Aaron C. Palke |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
spectroscopy
tourmaline lcsh:QE351-399.2 Materials science Photoluminescence Raman mapping corundum Physics::Instrumentation and Detectors Nanotechnology Corundum 02 engineering and technology engineering.material 010502 geochemistry & geophysics 01 natural sciences gemology symbols.namesake photoluminescence mapping diamond pearl Spectroscopy 0105 earth and related environmental sciences lcsh:Mineralogy jadeite Diamond Geology 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Rough surface engineering symbols Omphacite 0210 nano-technology Raman spectroscopy |
| Zdroj: | Minerals Volume 11 Issue 2 Minerals, Vol 11, Iss 177, p 177 (2021) |
| ISSN: | 2075-163X |
| DOI: | 10.3390/min11020177 |
| Popis: | Raman and photoluminescence (PL) mapping is a non-destructive method which allows gemologists and scientists to evaluate the spatial distributions of defects within a gem it can also provide a method to quickly distinguish different species within a composite gem. This article provides a summary of this relatively new technology and its instrumentation. Additionally, we provide a compilation of new data for various applications on several gemstones. Spatial differences within diamonds can be explored using PL mapping, such as radiation stains observed on the rough surface of natural green diamonds. Raman mapping has proven useful in distinguishing between omphacite and jadeite within a composite of these two minerals, identifying various tourmaline species within a heterogeneous mixture, and determining the calcium carbonate polymorphs in pearls. Additionally, it has potential to be useful for country-of-origin determination in blue sapphires and micro-inclusion analysis. As new avenues of research are explored, more applications for gem materials will inevitably be discovered. |
| Databáze: | OpenAIRE |
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