Gemstones Grading: Ensures The Quality Of Gemstone And Jewellery

Now a day’s, before to purchase jewellery or gemstones most of the people generally asked about its quality certificate. Certificate or Grading from a recognized authority generally ensure the customers about the quality of the products. From the last few years there is increase in number of certifications for the quality of gemstone.

There are many laboratories that provide certification for the quality of gemstones and there is no global grading system for the quality of gemstone.

Various Laboratories which provides grading to jewellery and gemstones include:

1) International Gemological Institute (IGI) is an independent laboratory which grades both jewellery and precious stones.

2) Gemological Institute of America (GIA) provides various types of information and grading reports related to jewellery and gemstones.

3) American Gemological Society (AGS) is other famous society recognized in this field.

4) Other famous Laboratory for which grades stones is American Gem Trade Laboratory. This Laboratory is the part of American Gem Trade Association (AGTA).

5) European Gemological Laboratory (EGL) is other laboratory which grade gemstones.

6) One organization which is famous for gemological research is Gemological Association of All Japan (GAAJ).

Other famous institutes which are famous in gemmological research are Gemmological Institute of Thailand (GIT), Asian Institute of Gemmological Sciences (AIGS), Swiss Gemmological Institute (SSEF), Gübelin Gem Lab etc.

Each and every laboratory has its own method to test gemstones. So to standardized the grading system, seven most reputed laboratories such as GAAJ (Tokyo), AGTA-GTL (New York), GIA (Carlsbad), GIT (Bangkok), CISGEM (Milano), Gübelin (Lucerne) and SSEF (Basel) have established a new laboratory committee known as Laboratory Manual Harmonisation Committee (LMHC). The main aim of this laboratory is to standardize the whole testing process of the gemstones.