The Green Diamond, which was presented by Prime Minister Modi to the US President Joe Biden and First Lady, was developed in which state?

Prime Minister Narendra Modi presented a unique gift upon US President Joe Biden and First Lady Jill Biden. It was produced by a lab based in Surat, Gujarat. The lab-grown 7.5-carat green diamond possesses similar chemical and optical characteristics as naturally mined diamonds from the Earth. The diamond is eco-friendly as resources like solar and wind power were used in its making. It has emitted only 0.028 grams of carbon per carat, and is certified by the Gemological Lab, International Gemological Institute. Hence, option 'B' is correct.