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Gemological Laboratory for Diamonds, GLD, has been serving the diamond district in NYC for many years. We use state-of-the-art equipments and technology to provide professional and accurate certificates for your diamond.

GLD is experienced in producing diamond report certificates as per GIA & EGL-USA grading guidelines.


Joe Gavrielow, GG, is a professional gemologist whose qualifications include:
* GG Graduate Gemologist through GIA.
* 15 years experience in the diamond and jewelry industry.
* Continued education to maintain the highest level of accuracy possible.
* Extensive research through library and contact network.

Gemological Instruments in GLD`s laboratory:
  • Electronic Balances
  • Ultraviolet Fluorescence
  • Binocular Microscope
  • Proportion Measuring Devices
  • Refractometer
  • Polariscope
  • Dichroscope
  • Special Gravity Liquids
  •  Spectroscope
  • Color Filters
  • Triplet 10X Loop
  • Thermal Conductometer
  • Thermal Reaction Tester (hot Point)

Please feel free to contact us by phone or email us  mg0256@thejnet.com

 
Certificate Sample
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Click here to enlarge

 

 
 
Gemological Laboratory for Diamonds
30 West 47th St. Room 403
New York, NY 10036, 845-782-0256
www.gldiamond.com
mg0256@thejnet.com
Working Hours
Monday - Thursday
10:00 A.M. - 5:00 P.M.
Copyright Gemological Laboratory for Diamonds. 2007. All Rights Reserved.
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