Spectroscopic Analysis for Harnessing the Quality and Potential of Gemstones for Small and Medium-Sized Enterprises (SMEs)

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Samples</td><td class="align_center">Slope</td><td class="align_center">Urbach energy (meV)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Pyrope-almandine garnet</td><td class="align_center">1.93</td><td class="align_center">520</td></tr><tr><td class="align_left">Quartz</td><td class="align_center">4.75</td><td class="align_center">210</td></tr><tr><td class="align_left">Black tourmaline</td><td class="align_center">2.17</td><td class="align_center">460</td></tr><tr><td class="align_left">Amethyst</td><td class="align_center">2.32</td><td class="align_center">430</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Urbach energy of gemstones calculated by the slope of the best fit line through vertical segments of plots from Figure <a href="../fig3/">3</a></div>

Journal of Spectroscopy

tab2

Table 2

Table 2: Spectroscopic Analysis for Harnessing the Quality and Potential of Gemstones for Small and Medium-Sized Enterprises (SMEs) 