Diamond Testing

The GJSPC laboratory Diamond identification Report is a response to the increase in treated and synthetic diamonds in the market place, GJSPC Laboratory now offers an indication services for loose diamonds in the smaller size ranges to help the trader to trade safely with confidence. Available for D-Z and colored diamonds 0.20 carats and less and black diamond’s 5.00 carats and less, this service offers tests to determine:



Natural vs. synthetic and color treatment

Clarity treatment

Diamond type

Gem material

Surface treatment

The GJSPC Laboratory Diamond Grading Report includes an assessment of the 4Cs – Colour, Clarity, Cut, and Carat Weight – along with a plotted diagram of its clarity characteristics. For standard round brilliant cut diamonds falling in the D-to-Z color range, the report also includes a GIA Cut grade.

The GJSPC Laboratory provides parcel assortment services matching to the customer and market requirement. This is a fully flexible service to cater the assortment demand of the client. In this service we assort the diamonds on 4Cs- Cut, Colour, Clarity, and Carat.

Report Sample