Next OPT in Hong Kong

Once again the Gübelin Gem Lab is bringing its expertise to you! We are pleased to announce our next off-premise gem testing service in Hong Kong and invite you to take this opportunity to use our services near you.

Hong Kong International Diamond, Gem & Pearl Show
Asia World Expo (AWE)
28 February - 4 March 2017
Gübelin Booth:  9-M08
Mobile: +852 9463 3571
Hong Kong International Jewellery Show
Hong Kong Convention and Exhibition Centre (HKCEC)
2-6 March 2017
Gübelin Booth: 5CON-005
Mobile: +852 9463 3547

For organisational purposes we kindly ask you to contact us in advance in order to arrange an appointment (T: +852 2868 2781 or

We would also appreciate an estimate of the number of stones you wish to submit for testing.