A screening procedure indentifies a simulant diamond, a synthetic or lab grown diamond, or a natural diamond. There are three types of diamonds available in the market. Simulant Synthetic Natural Simulants and synthetic diamonds differ hugely in terms of value from natural diamonds. Simulants are stones that only resemble diamonds, (example cubic zirconia (CZ), moissanite, [...]

ASSORTMENT SERVICES At GJA Lab, we offer diamond grading/assortment services for small diamonds. Each Diamond is tested using high-end diamond detection machine and separated into three categories : Natural Lab Grown-CVD/HPHT Simulant-CZ, Moissanite Every diamond at GJA Lab goes through a stringent and strict assortment process using 4Cs-Carat, Colour, Clarity & Cut parameters under the [...]

We at GJA Lab do the screening & testing of each jewellery using the high end XRF machine to determine its purity and fineness with utmost accuracy Every item submitted at GJA will go through the process of screening & testing using the high end XRF machine to determine its purity and fineness with utmost [...]

POLKI OR UNCUT DIAMOND JEWELLERY REPORT At GJA Lab, Polki or Uncut diamond jewellery is screened & tested using technology and certifying it according to the mounting permit. LAB GROWN DIAMOND JEWELLERY REPORT Each diamond set in jewellery is tested to confirm whether it is Natural, Laboratory Grown or Simulant. If it is found to [...]

Each diamond is tested to confirm whether it is Natural, Laboratory Grown, or Simulant. If it is found to be Lab-Grown, a Lab Grown Diamond Report will be issued with the clear wording on the report “LAB GROWN”.All the details like weight, measurements, colour, clarity, cut grade, symmetry, polish, fluorescence, and shape will be mentioned [...]

The GJA Coloured Gemstone Report consists of the following information: Identification, Authenticity, Treatments Country of origin on certain gemstones Weight, Measurements, Colour Optical and Physical characteristics Detailed Photograph The gemmological characteristics of the gemstone will be assessed in line with the strictest internationally recognized standards. THE FULL REPORT INCLUDES Weight Measurement Authenticity Colour Identification Origin [...]

In our rough diamond report, we provide the following information : Authenticity and Quality of Rough Diamond. Weight, colour and clarity. With or without a polished surface. Transparent to opaque. Sawable or Makable. THE FULL REPORT INCLUDES Weight Colour Clarity With or without a polished surface Transparent to opeque Sawable or Makeable Unique QR Code [...]