The International Gemological Institute (IGI) has analysed and graded a 35.00-carat laboratory-grown diamond (LGD), the…

The International Gemological Institute (IGI) has analysed and graded a 35.00-carat laboratory-grown diamond (LGD), the…
The GJEPC Regional Office in Kolkata, in collaboration with the District Industries Centre (DIC), Howrah,…