Multifaceted Gemstone Analysis Using UV-Vis and EDX - Tanzanite and Zoisite

User Benefits

- The color of gemstones can be quantitatively evaluated using an ultra-violet and visible light spectrophotometer (UV-Vis). - Qualitative and quantitative analysis of trace elements can be performed with the energy dispersive X-ray fluorescence spectrometer (EDXRF). - By using UV-Vis and EDXRF, the relationship between differences in the color of gemstones and trace elements can be investigated.

Introduction

Various types of gemstones are in circulation, and the types and geographical origins of the gems that are traded are diverse. In recent years, interest in gemstones has grown, and it is expected that the number traded will increase. Gem identification involves considering various things such as the origin, color, and cutting. Methods to evaluate the color of gemstones include ultra-violet and visible light spectrophotometry (UV-Vis) and energy dispersive X-ray fluorescence spectrometer (EDXRF). With UV-Vis, the color can be directly evaluated, and with EDXRF, trace elements that cause color can be evaluated. This article introduces examples of evaluating gemstone colors using UV-Vis and EDXRF for the green and blue gemstones zoisite and tanzanite.

19 de diciembre de 2023 GMT