Center for Gem & Jewellery Pvt Ltd - (CGJ)
No. 245 ½, Kubra Building,
Galle Road, Colombo 4,
Sri Lanka.
Tel : +94 112 555 623
Email : info@cgjlk.com

Center for gem and jewellery Center for gem and jewellery Center for gem and jewellery Center for gem and jewellery Center for gem and jewellery

Center for Gem & Jewellery (CGJ) - Testing Laboratory is an independent gemological laboratory. We specialize in identifying gemstones, analyzing the enhancement of gemstones, identifying rare gemstones and grading diamonds. We have with us highly experienced and qualified gemologists in our gem laboratory with GG [GIA] & FGA qualifications. Additionally, our laboratory is equipped with advanced instruments which are of high quality and reliability


Identify Natural Gem Stones Identification and Certification of natural stones from synthetic and imitations.

Identify Gem Treatments We are competent to identify stones that are
  • Heat treated
  • Diffusion processors including beryllium
  • Types of filling
  • Assembled stones etc…

Gem Certificates We offer the following products
  • Individual Gem Certificate with Color Photograph (IGC).
  • Individual Gemstone Identification Report without photograph: (IC)
  • Lot Identification Certificates: (LIC)
  • Individual Gem Certification Cards (IGCC)

Diamond Grading Identifying natural diamonds from stimulants.
Validate CGJ Certificate Certificate ID