;
;
____________________
________________________________________________________________________________________
 
Copyright © - All rights reserved
 
Gem Testing Laboratory | Diamond Grading | Diamond Studded Jewellery
Testing Charges :-
Gems | Diamonds
Jewellery
   GEM TESTING LABORATORY
THE VERY FIRST GEM TESTING LABORATORY IN INDIA :

GII was established in the year 1971 by the Gem & Jewellery Exporters Association. GII 's Gem Testing Laboratory is a service organisation working for the benefit of the Indian Gem industry. The Gem testing laboratory is a turning point in the history of Indian gem industry towards the scientific development in the field of Gemmology in India. The laboratory is supported by the industry, and hence the testing fees are at a very subsidized level.
IMPARTIAL AND INDEPENDENT LABORATORY :

Gem Testing Laboratory is the backbone of the Gem Industry in India. The Laboratory is also open to the General Public. Gem testing laboratory of the GII extends its services, whenever required, to the Customs department of the Government of India for identifying gemstones in the course of imports and exports. The gem testing facilities are also availed by other departments like income tax, police etc. India's premier, impartial and independent gem testing laboratory is located in the heart of the Gemstone market in Bombay i.e. Zaveri Bazar.More than 50,000 gemstones have been certified till date.
INTERNATIONAL RECOGNIZATION :

Gem Testing Laboratory is recognized by the CIBJO, the appex trade organization of the Gem Trade and Industry in the world. GII's Gem Testing Certificates are of international standard and are valid all over the world.
ENCOURAGING THE EXPORT GROWTH :

GII's Laboratory is serving the Industry by certifying gemstones in the course of exports and imports, when ever required. It safe guards the credibility of Indian gem industry, which in turn helps the growth of exports from the country. Eversince the science of gemstone started developing in India, the exports also started booming. Gemmological education indirectly gave a fillip to the export growth of gemstone from the country.
 
RESEARCH LABORATORY
NEED FOR R & D

Research and development is the fundamental for the growth of any industry Keeping this vital aspect in mind and understanding the requirements and the needs of the Indian gem industry, GII started the Research and Developmental activities as early as in 1976. the research team of the institute engaged in various developmental programmes covering applied and pure science, study gemstone and their properties, with a view to improve the quality of gemstones exported from the country.

SIRO / RECOGNIZATION

In the year 1979, GII has obtained the recognization as an R & D Laboratory by the Department of Science and Technology, Government of India.

In pursuit of perfection and attainment of more and more scientific achievements, the institute got the most coveted recognition as Scientific Industrial Research Organisation ( SIRO ) by the ministry of science and technology, Government of India in the year 1998. R & D Laboratory is headed by Dr. Jayshree Panjikar, a very well known Gemmologists in the world today.
A GLANCE at GII LABORATORY :
THREATS TO THE GEM & JEWELLERY INDUSTRY

The threats to the Gem & Jewellery Industry are :
        HPHT- HIGH PRESSURE HIGH TEMPERATURE
       SYNTHETIC & TREATED
Diamonds and Gemstones
 
“Unless HPHT & Synthetic Diamonds and Gemstones are identified, they are a big threat to The Gem & Jewellery Industry.”

 
At GII , we identify
        HPHT
        TREATED / ENHANCED
        SYNTHETIC
Diamonds as well as Gemstones, with the help of Qualified Expertise and State-Of-The-Art Equipments.
At GII’s laboratory, many advanced scientific methods are used for gem testing. These are complimentary and supplementary to each other. Using extensive data from all these methods, at GII it is possible to get a “complete and relevant” knowledge of the gemstones.
 
FT - IR: Fourier Transform Infrared Spectroscopy :
 

FTIR is a non-destructive vibrational spectroscopy methods used for characterising a variety of materials.
At GII, FT – IR is an important “work–horse” routinely used to identify the following :
        Type of Diamonds
        Heat treatments of rubies & sapphires
        Oiling and filling in emeralds done to improve clarity
        Bleaching and dying in jade etc.
Laser Raman Spectroscopy :
 

This is another powerful non-destructive vibrational spectroscopic technique, discovered by Sir C. V. Raman, used extensively for characterising a wide variety of materials.
At GII, this is being routinely used for :
        “ Fool – proof ” identification of diamonds and its stimulants,
          Colouration and thermal history of diamonds & all other gemstones and inclusions thereof.
UV/Vis/NIR Absorption :
 


Absorption spectroscopy in UV/Visible again is a standard non-destructive method to identify the species responsible for the colour in solids.
 
At GII this powerful technique is used to :

        Identify the gemstone and its colouring species which in turn yield useful information about the            origin of  the stone and the treatments it was subjected to.
 
 
Fluorimeter and Diamond View :
 
  
 
Fluorescence & phosphorescence are complimentary to the absorption techniques, as they involve reemission of light following excitation with high energy light. Whereas the Fluorimeter gives spectral information about light emitting species in diamonds and gemstones, the Diamond View gives the direct mapping of emitting species, distributes diamond samples.
At GII these techniques are routinely used to identify :
        Natural and synthetic diamonds and also the emission properties of all the other gemstones.
 
Diamond Sure & Diamond Spotter :


 
These are standard and quick methods to identify diamonds at a preliminary level.
 
 
D- Scope Microscope :
 
A gemmological microscope is routinely used in the lab. Designed to utilize a variety of illumination techniques, it helps us to investigate the internal microscopic world of gem stones. A lot of information can be extracted from general observations under a gemmological microscope.
 
At GII the microscope is routinely used to identify the following :

       To determine whether a gem is natural or synthetic as well as many of the origins from its            inclusions.

        Many treatments can be detected such as frosted crystals and dissolved silk in ruby and            sapphirecaused by heat treatment.
        Oil in fractures of an emerald indicating clarity enhancement.
        Colour concentration in cracks and pits of jade as an indication of dying.
 
FREQUENTLY ASKED QUESTIONS
FREQUENTLY ASKED QUESTIONS

1) How long does it take to grade and certify Diamonds / Studded Jewellery / Gemstones ?

GII takes 2 to 3 working days to identify, grade and certify the Diamonds / Studded Jewellery / Gemstones submitted at the laboratory.

2) Are GII certificates accepted world wide ?

Gemmological Institute of India’s Laboratory is recognised by CIBJO - The World Jewellery Confederation and is also recognised by Scientific Industrial Research Organisation (SIRO), Department of Science & Technology, Government of India. The certificates issued by the Gemmological Institute of India are accepted all over the world.

3) What advantage do we have in getting our Diamonds / Studded Jewellery / Gemstones certified     with GII?

1) GII is a trade laboratory regulated by the Gem and Jewellery Export Promotion Council, Ministry of      Commerce and Industry, Govt. of India.

2) GII is a non-profit trust and is working for the benefit of the Industry.

3) GII has qualified and experienced gemmologists and graders.

4) GII is equipped with the state of the art equipments for Gemstone & Diamond identification, such as :-
     FTIR (Fourier Transform Infrared Spectroscopy), Raman Spectrophotometer, UV Visible      Spectrophotometer, Fluorimeter, Diamond View, Diamond Sure etc. for identification of Treatments,      Synthetics, Simulants etc. in Diamonds and Gemstones.

5) GII follows the Bureau of Indian Standards (BIS) and also Internationally accepted norms and      standards for grading Diamonds and Gemstones.

6) GII is an independent and impartial laboratory.

4) What are the testing Charges

    Kindly Click on the links below :

|
|