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

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Sample</td><td class="align_center">Direct band gap energy (eV)</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Pyrope-amandine garnet</td><td class="align_center">5.14</td></tr><tr><td class="align_left">Quarts</td><td class="align_center">6.12</td></tr><tr><td class="align_left">Black tourmaline</td><td class="align_center">5.54</td></tr><tr><td class="align_left">Amethyst</td><td class="align_center">5.74</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Direct bandgap energy is calculated by extra plotting the vertical segment of the plot with intercept <i>x</i>-axes from Figure <a href="../fig4/">4</a>.</div>

Journal of Spectroscopy

tab3

Table 3

Table 3: Spectroscopic Analysis for Harnessing the Quality and Potential of Gemstones for Small and Medium-Sized Enterprises (SMEs) 