Garry Holloway FGAA, DipDT, JAA Appraiser, left a career in geology and in 1976 established Melbourne diamond design award winning jeweller, Precious Metals. In 1984 he studied the Fire Scope while undertaking the Gemological Association of Australiaâ€™s Diamond Diploma. This led to a long and passionate interest in diamond cut. After the publication of the Gemological Institute of America's â€˜brillianceâ€™ report in 1998 this passion became a crusade to improve the cut quality of all diamonds. Garry developed the Holloway Cut Adviser (HCA) system in 2000, and released a portable Ideal-Scope in 2001. In 2004 he was a speaker at the 1st International Diamond Cut Conference (IDCC) in Moscow, Russia. The HCA was used to grade the cut quality of more than a billion dollars of diamonds in its first year alone. Holloway's HCA patent was granted on July 31, 2007. His diamond-cut consultancy has strong alliances with leading international diamond researchers and websites.