Assessing the Mercury Usage in Small Scale Jewellery

  Manufacturing:A detailed study from Sri Lanka

  Authors: A.D.C de Silva, T.M Rubasinghe, M.A.N.C Manthrieerathna, S.R Diyabalanage,

  W.G.C.N Wawegedara, N.P.K Jayasinghe, T.S Dharmarathne

 This technical report was published under the research project of “Assesssing the Mercury

 Usage in Small Scale Jewellery Manufacturing: A detailed study from Sri Lanka” with the 

 funding of Global Environmental Facility (GEF).

 Introducing Non- Mercury Alternative for Gold Refining in Small Scale Jewellery Sector

 Authors: A.D.C de Silva, M.A.N.C Manthrieerathna, W.G.C.N Wawegedara,

 N.P.K Jayasinghe, T.S Dharmarathne

 This interim report was published under the research project of “Assesssing the Mercury   Usage in Small Scale Jewellery Manufacturing: A detailed study from Sri Lanka” with the   funding of Global Environmental Facility (GEF)

 Introduce the most effective and efficient color and clarity enhancement

 for Semi-Precious gem minerals found in gem gravel beds in Sri Lanka.

 Authors:

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

 Note:

 This technical report was published under the research project of “Introduce the most effective and efficient color and clarity enhancement for SemiPrecious gem minerals found in gem   gravel beds in Sri Lanka” with the funding of National Science Foundation (NSF).

 Dharmaratne T.S., Premasiri H. M. R., Jayasinghe 

 R.M.N.P.K., Illangasinghe I.K.M.S.C.K 

 and Wickremaarachchi W.A.K.C., 2011. 

 Gem Potentiality of Wellawaya Divisional Secretariat. 

 Gem and Jewellery Research and Training Institute, Sri Lanka.

 Dharmaratne T.S., Jayasinghe R.M.N.P.K. and Herath K.R.P.K., 2006. 

 Exploration and Identification of New Gem Deposits at Naula Divisional 

 Secretariat in Matale District, Sri Lanka. Gem and 

 Jewellery Research and Training Institute, Sri Lanka.

  Dharmaratne T.S., Jayasinghe R.M.N.P.K. 

 and Herath K.R.P.K., 2006. Feasibility Study 

 on Magnetite Deposit in Horakagodakanda Range 

 in Buttala, Sri Lanka. Gem and Jewellery Research 

 and Training Institute, Sri Lanka.

  Dharmaratne T.S., Jayasinghe R.M.N.P.K. 

 and Herath K.R.P.K., 2006. Feasibility Study on 

 Gem Mining in Naimulla Land in Hanwella, Sri Lanka. 

 Gem and Jewellery Research and Training Institute, Sri Lanka.

 Dharmaratne T.S., Jayasinghe R.M.N.P.K., 

 Jayamali M.K.C. and Wijewardhane S. 2014. 

 Eco-Friendly Gem Mining Techniques For Sustainable 

 Development in Ratnapura District, Sri Lanka. 

 Gem and Jewellery Research and Training Institute, Sri Lanka.