ITLGJ Laboratory set up and system

The submitted stones are identified by highly qualified and experienced gemmologists and reports issued are not only based on classical gemmological testing but also on in-house research results carried out on various sophisticated techniques and instrument, providing a strong scientific back-up to the identification reports. ITLGJ has prepared and maintains a standardised nomenclature in accordance with the international CIBJO standards

Methodology in certification
Every specimen is examined by two gemmologists independently. The results are then correlated and a report is issued. Testing is carried out by following the pre-determined criteria strictly. In some cases a situation arises where in there is a difference of opinion among the gemmologists; in such cases the specimen maybe returned without an identification report.

Methodology for submitting a stone for testing
There are a number of different categories under which a stone is accepted for identification. However, the criteria for depositing the specimen/s remain constant.

- Gemstone/Identification
ITLGJ offers distinct types of reports depending on the category. Each report will be laminated and contain a photograph of the specimen under test. Sta rough – (preferably) with or without a polished surface , transparent to opaque

- cut in any style – pre-form, facetted, cabochon, bead - drilled /undrilled
- set in jewellery / in a decorative piece - open or close back setting
- large carvings
- beads strung on a thread / wire
- large packet lots
- antique pieces

ones may be tested in the follow
Enhancements/Treatments are routinely certified at no additional charge subject to the identification with the available techniques at ITLGJ Jaipur and significance of disclosure it carries. Various treatments include coating, foiling, diffusion, lasering, coloured impregnation (general colour presence, not filler identity), all various treatments in corundum (including heat, diffusion, fillers, etc.), fracture filling along with the nature of filler identification in emeralds, EEF : Fractures filling in diamonds is reported on the ITLGJ Treatment Identification reports. For disclosure policy followed on ITLGJ Treatment Identification.

Singlestone,identification,reports
These reports identify the gemstone under examination. The tests include all the measurable properties of the stone using.the microscope UV,Lamp and Spectroscope instruments and or other instruments.

Details specified on a report are mainly the description of the stone, weight in carats, colour, type of cut, dimensions, the nature of the stone - whether natural, synthetic or glass, final identification of the stone in gemmological name of mineral and the nature of treatment applied (as described above). See Sample…

Packetlot,identification,reports
These are collective reports for any of the following categories. In each of these categories, the stones must have a minimum diameter of 4mm each. This category is also however applicable for rubies, sapphires and emeralds.

- Loose stones in lots of five or more.
- Bead strings - a minimum of 2, inches is required.
- Five or more stones set in a single piece of jewellery.

Details specified on a report are mainly the description of the stones, the total weight in carats, colour range, type of cut, the nature of the stone -whether natural, synthetic or glass, and the final Identification of the stones. Reports, ing whichever form:

For security, every certificate is laminated, will carry a photograph of the specimen/s being tested and a 3D hologram, which reads the logo of the International Testing Laboratory Gems & Jewellery at one angle and ITLGJ. the report

Report,Verification
ITLGJ has also introduced a report verification system where you can authenticate your report. Please click here to verify your report.

Diamond Jewellery Report
This is a collective report for all diamonds set in a piece of jewellery and mainly carries the grades (colour, clarity and Cut) of studded diamonds. The grading is conducted on the basis international standards following strict criteria presenting the facts, without any favour; however, the grading results are affected due to mounting limitations. These reports shall be issued on 'smart cards', standard reports. See sample