Gem Occurrences in Kumbukkan Oya Alluvium Deposit in 

Monaragala District 

Wewegedara W.G.C.N., Jayasinghe R.M.N.P.K., Dharmaratne T.S., Premasiri H.M.R., Proceedings 

of Nineteenth International Forestry and Environment Symposium, 2014.

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Value Addition of Sri Lankan Gem Zircon via Heat Treatment 

Wewegedara W.G.C.N., PrashanFransis, International research Symposium Proceedings, Sri Lanka 

Next- ‘A Blue-Green Era’, 2016

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ASSESSMENT OF GEM OCCURRENCES WITHIN THE 

MONERAGALA DIVISIONAL SECRETARIAT AREA 

Wewegedara W.G.C.N., Jayasinghe R.M.N.P.K., Research Symposium Proceedings, Mineral Resources 

of Sri Lanka, Prospects and Challenges, 2017.

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THERMAL ENHANCEMENT OF INFERIOR QUALITY 

CORUNDUM VARIETY CALLED ‘KIRI KOTTARA’ 

W.G.C.N. Wewegedara, N.P.W.D.S.D. Rodrigo, A.U. Wijenayake, Prashan Francis, Research Symposium 

Proceedings, Mineral Resources of Sri Lanka, Prospects and Challenges, 2017.

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Study on Awareness on the Mercury Usage in Sri Lankan 

Small Scale Jewellery Sector 

De Silva A.D.C., Rubasinghe T.M., Manthrirathne M.A.N.C*., Wewegedara W.G.C.N., 

Diyabalanage R.S., Jayasinghe., R.M.N.P.K., Dharmaratne, T.S., International Forestry 

and Environment Symposium, 2019.

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Preliminary Investigations on the occurrence of Reddish 

Brown Colour in Zircon from Kolonna, Sri Lanka 

Rifkhan, M.N.M., Wewegedara W.G.C.N., Jayasinghe R.M.N.P.K., Dharmaratne T.S., Malaviarachchi

 M.A.S.P.K, Chndrajith Rohana., 2020, International Research Conference of Uva Wellassa University 

of Sri Lanka (IRCUWU-2020)

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