Precious Gem testing process

Hand over gem at receiving counter mentioning what type of Report is required; obtain receipt indicating description & weight of item, value as declared by client ( for internal insurance purposes), approx. delivery time. The item handed to lab.

step1 1

Gem Receipt

step2 2

Weighing and Measuring

step3 3

Cut, Clarity, Color Grading

step4 4


What Makes Us Different?

A State of the Art laboratory equipped with the most advanced gem testing equipment available in Sri Lanka – FTIR; UV-VIS; Raman Spectrometer are a few of the advanced equipment we use for our gem testing.

  • Trust & Confidence – The lab is manned and directed by well experienced gemologists counting over 35 years of hands -on experience assuring you of the most reliable and accurate Reports on your gems.
  • Sri Lanka’s only Gem testing laboratory grading diamonds against GIA graded Master Stones. Thus making sure that your Diamonds are colour graded to precise international standards.
  • Online report Check – You will be able to view and verify your Reports on-line from anywhere in the world giving you unsurpassed convenience and peace of mind.
  • Quick turnaround time – We offer fast turnaround time of 36 hours ensuring quick conclusion of your business deals.
  • Express Service – An express service of a matter of hours (depending on availability) will be provided at an additional charge.
  • Co-Branding – Your Company logo and name can be printed on our gem stone Briefs so that your clients will know at a glance whose product it is that they have purchased.
  • Bilingual Reports – Keeping modern trends in mind we offer bilingual Reports (Chinese& English). This will enable you to penetrate one of the most important gem markets.
  • Mobile Lab Service – Our Mobile lab is available to conduct on- site testing at your establishment, giving you the option of convenience.

News & Upcoming Events

Here are our latest News & Upcoming Events

  1. Beijing Gem & Jewellery Fair in China (April, 2017)

    We take pride in conducting On-Site laboratory service in Beijing Gem & Jewellery Fair in Beijing, China. We had the chance to showcase our certi...Read more »

  2. Facets participation (Sept, 2016)

    We were present at the 2016 Facets Gem Exhibition in Colombo, Sri Lanka, where we were able to introduce ourselves and explain in detail the facilitie...Read more »

  3. Opening of PGTL Laboratory in Beruwala, Sri Lanka (June, 2016)

    We had a grand opening of our PGTL branch in Beruwala, Sri Lanka, headed by Mr. Darshana Peiris as chief gemologist (Ex valuation director at Gem Corp...Read more »