The Official Website of The British Gemmological Institute (BGI) An Independent Laboratory Accredited by the UK Government’s Dept. of Trade & Industry (DTI) “Dedicated to creating trust and reliability” Here are some of the BGI Laboratory’s professional services: Diamond grading using Official International Master Stones Valuations and Insurance Assessment Jewellery & Gemstone Testing A Fair, Independent and Impartial opinion Investigates cases of suspected fraud Recovery of stolen assets around the world Spectrometer Testing for Synthetic & Simulated diamonds Tests carried out by BGI gem experts Educational programmes or tuition courses by appointment