LOCATION
Gem Testing Center
The Gem and Jewelry Institute of Thailand
(Public Organization) ITF-Tower Building.
4th Floor, Silom Road, Suriyawong
Bangrak, Bangkok 10500, Thailand

Tel: +66 2634 4999 ext. 409
Fax: +66 2634 4970
E-mail:

LAB HOURS
Mon - Fri: 09:00 - 17:00
Closed on Thai government public holidays

LAB FEES
LASER INSCRIPTION FEES

Gemological Instruments

Basic Instruments
Basic gemological instruments

Refractometer, polariscope, gemological microscope, 10x loupe, specific gravity balance, daylight & UV lamps, hand spectroscope, diamond tester (thermal conductivity meter), moissanite tester, D-screen, Chelsea color filter, dichroscope, fiber-optic light. These are basic instruments used in the establishing the general gemological features of the gem in question.

Advanced Instruments

The following instruments are used for in-depth analysis of gemstones and are at the cutting edge of gemology. Only a handful of labs around the world have access to these tools, each of which is present in the GIT Gem Testing Center.

Energy Dispersive X-Ray Fluorescence Spectrometer (EDXRF)
  • Distinguishing between synthetic and natural gemstones
  • Analyzing quality enhancement methods of specific gemstones
  • Analyzing elements to identify the geographical origin of the gemstones

Energy Dispersive X-Ray Fluorescence Spectrometer (EDXRF)


Fourier Transform Infrared Spectrophotometer (FTIR)
  • Distinguishing between synthetic and natural gemstones
  • Enhancement identification of specific gemstones such as jadeite-jade with polymer impregnation and emerald with oil or polymer impregnation

Fourier Transform Infrared Spectrophotometer (FTIR)


Raman Spectroscope
  • Rapid gem identification (loose, mounted and rough)
  • Enhancement identification
  • Analyzing inclusions to determine geographical origin
  • Analyzing diamonds that have undergone High Pressure High Temperature treatment (HPHT

Laser Raman Spectroscope (RAMAN)


UV-VIS-NIR Spectrophotometer
  • Testing gemstones that have undergone heat treatment (such as ruby & sapphire)
  • Distinguishing between synthetic and natural gemstones
  • Determining the geographical origin of gems
  • Enhancement identification
  • Origin of color (natural or enhanced) in colored diamonds

UV-VIS-NIR Spectrophotometer


Soft X-Ray Unit
  • Distinguishing between natural and cultured pearls
  • Analyzing nacre thickness in cultured pearls
  • Distinguishing diamond from imitation diamonds
  • Analyzing the clarity enhancement by glass in gems such as diamond & ruby

Soft X-Ray Unit


Laser Induced Breakdown Spectrometer (LIBS)
  • Detecting beryllium in beryllium-diffused ruby and sapphire

Laser Induced Breakdown Spectrometer (LIBS)


Sarin Diavision Proportion Meter
  • Measuring proportion of cut diamond
  • Directly generate Hearts and Arrows image of the analyzed diamond

Sarin Diavision Proportion Meter


Diamond and Gem Laser Marker
  • Inscribing the girdle of diamond and other gems

Diamond and Gem Laser Marker


Laser Ablation Inductively Couple Plasma Mass Spectrometer (LA-ICP-MS)
  • Distinguishing between synthetic and natural gemstones
  • Analyzing quality enhancement methods of specific gemstones
  • Analyzing of trace to ultra trace elements to identify the geographical origin of the gemstones
  • Detecting beryllium in beryllium-diffused ruby and sapphire

LA-ICP-MS