The International Gemological Institute (IGI) has certified a 50.25-carat lab-grown diamond – the first LGD to surpass the significant “half-century” mark in carat weight. 

Submitted to IGI by Ethereal Green Diamond LLP (Ethereal Green), the specimen – named Shiphra – measures 22.95 by 18.45 by 11.57 millimeters and has been described by IGI as a “landmark achievement” in the LGD sector.

The Type IIA emerald-cut G-colour LGD of VS2 clarity has an excellent cut, polish, and symmetry, according to IGI. The crystal, from which it was polished, was grown over a period of eight weeks using chemical vapor deposition. 

Tehmasp Printer, president and managing director of IGI India, commented, “This gemstone is a paradigm-shifting breakthrough, surpassing 50 carats while exemplifying preeminent standards of sophistication and quality.”