Jaliya, RGC; Thotahewa, AHTTB; Palihakkara, CR; Siriwardena, PRR; Premasiri, HMR; Dharmaratne, PGR; Chaminda, SP; Senanayake, IP
[Conference-Full-text]
Sri Lanka has been known as 'Ratnadeepa', which translates to 'Island of
gems' because of the precious natural gemstones found in its gravelly soil. Even
though the gem industry in Sri Lanka extends back to ancient times, ...