Raman and Photoluminescence Mapping of Gem Materials
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...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-02-01
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| Series: | Minerals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-163X/11/2/177 |
| _version_ | 1797412771124477952 |
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| author | Sally Eaton-Magaña Christopher M. Breeding Aaron C. Palke Artitaya Homkrajae Ziyin Sun Garrett McElhenny |
| author_facet | Sally Eaton-Magaña Christopher M. Breeding Aaron C. Palke Artitaya Homkrajae Ziyin Sun Garrett McElhenny |
| author_sort | Sally Eaton-Magaña |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-09T05:08:05Z |
| format | Article |
| id | doaj.art-6e68642bca264c70a658957385f6629c |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T05:08:05Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-6e68642bca264c70a658957385f6629c2023-12-03T12:53:08ZengMDPI AGMinerals2075-163X2021-02-0111217710.3390/min11020177Raman and Photoluminescence Mapping of Gem MaterialsSally Eaton-Magaña0Christopher M. Breeding1Aaron C. Palke2Artitaya Homkrajae3Ziyin Sun4Garrett McElhenny5Gemological Institute of America, Carlsbad, CA 92008, USAGemological Institute of America, Carlsbad, CA 92008, USAGemological Institute of America, Carlsbad, CA 92008, USAGemological Institute of America, Carlsbad, CA 92008, USAGemological Institute of America, Carlsbad, CA 92008, USAGemological Institute of America, Carlsbad, CA 92008, USARaman 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.https://www.mdpi.com/2075-163X/11/2/177Raman mappingphotoluminescence mappingspectroscopydiamondcorundumtourmaline |
| spellingShingle | Sally Eaton-Magaña Christopher M. Breeding Aaron C. Palke Artitaya Homkrajae Ziyin Sun Garrett McElhenny Raman and Photoluminescence Mapping of Gem Materials Minerals Raman mapping photoluminescence mapping spectroscopy diamond corundum tourmaline |
| title | Raman and Photoluminescence Mapping of Gem Materials |
| title_full | Raman and Photoluminescence Mapping of Gem Materials |
| title_fullStr | Raman and Photoluminescence Mapping of Gem Materials |
| title_full_unstemmed | Raman and Photoluminescence Mapping of Gem Materials |
| title_short | Raman and Photoluminescence Mapping of Gem Materials |
| title_sort | raman and photoluminescence mapping of gem materials |
| topic | Raman mapping photoluminescence mapping spectroscopy diamond corundum tourmaline |
| url | https://www.mdpi.com/2075-163X/11/2/177 |
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