National Gem & Jewellery Authority
25 Galle Face Tr Colombo 03
0112390645, 0112329295, 0112390646, 0112325364, 0112390647, 0112390648
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Gem and Jewellery Research and Training Institute
"Ruwan Sevana" 73/5 A Walivita Kaduwela
0112579180
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Ajith Watch Center Communication Electrical Items
30A Galle Road Dehiwala
0777625548, 0114808930
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Rathnejaya Gems & Tools (Pvt) Ltd
No 233 Galle Road Dehiwala
0112718752, 0115515575, 0777510197
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Rathnejaya Gems & Tool (Pvt) Ltd
No 41 Level 04 East Lower Block World Trade Center Colombo 01
0112478528, 0777510197
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