1. Department of Geology, School of Natural Sciences Trinity College Dublin 2 Ireland
2. Earth & Ocean Sciences, School of Natural Sciences University of Galway University Road Galway Ireland
3. SFI Research Centre in Applied Geosciences (iCRAG) University College Dublin Dublin 4 Ireland
4. UCD School of Earth Sciences University College Dublin Dublin 4 Ireland
5. School of Geography, Earth & Environmental Sciences University of Birmingham Edgbaston Birmingham B15 2TT UK
6. Gemological Institute of America (GIA) New York NY 10036 USA