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Research Leaders with World Expertise


Gemological & Appraisal Service

labroditeAt CGL Canadian Gemlab, a highly-qualified team addresses:

  • Identification and disclosure of treatments on coloured stones
  • Colour origin of coloured /colourless diamonds
  • Grading and evaluation of rough diamonds


At CGL Canadian Gemlab, after gemologists identify and grade the gem and record any sign of treatments the item will be evaluated, if requested by the client.



Ethical appraisal services are offered to the trade and to consumers.

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