Welcome to GGTL

Global Gem testing laboratory is an independent firm that identifies appraises and evaluates gemstones and jewellery. We perform these services for the jewellery trade and the public.We have with us highly experienced and qualified gemologist in our laboratory, with membership of Alumni Association GIA, Gemmologist Association Great Britain (FGA) and Gemmologist Association Sri Lanka (MGA).

Member of Gemological Association of Great Britain Alumni Member of GIA
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Gem Testing

We assure you a precise and accurate test report at all time
  • Weight and measurement.
  • Colour and other optical and physical properties.
  • Species and variety of te apecimen.
  • Identify thermal treatment (heat un-heated).
  • Oil treatment & lead glass treatment.
  • Cobalt & titanium treatment.
  • Beryllium diffusions treatment.
  • Country of origin.

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Contact us

Global Gem testing Laboratory,
5-4B/1, Joseph’s Lane, Colombo 04,
Sri Lanka.

Tel : +94 11 2077989, +94 11 4503689
Mob : +94 72 7824119, +94 76 8213144
Email : pksusitha@ggtlsl.com