Research Article
Spectroscopic Analysis for Harnessing the Quality and Potential of Gemstones for Small and Medium-Sized Enterprises (SMEs)
Figure 2
Screen shots of stone investigated in this study: (a) Quartz (10 Ct) (b) Pyrope-almandine garnet (5Ct), (c) Black tourmaline (30 Ct), and (d) Amethyst (5 Ct).
(a) |
(b) |
(c) |
(d) |