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)