TG/2016/Tech-D/005

Introduce Most Effective and Efficient Colour and Clarity Enhancement methods for Semi Precious Gem Minerals Found in Gem gravel Beds in Sri Lanka

Dr. .Prashan Francis, , Director General, , Gem and Jewellery Research and Training Institute, , 071 2340828/0112407851, , dg@gjrti.gov.lk; hMr. .R.M.N.P.K.Jayasinghe, , Head of the Research Division, , Gem and Jewellery Research and Training Institute, , 077 3262622/011 2413650, , naleen@gjrti.gov.lk; Mr.S.V.T.D..Raveendrasinghe, , Research Officer, , Gem and Jewellery Research and Training Institute, , 071 6543155, 011 2413650

Collaborators

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Keywords

Geuda; Colour and clarity enhancement; Gem minerals in Sri Lanka