Garry Holloway
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 Australia’s Diamond Diploma. This led to a long and passionate interest in diamond cut.
After the publication of the Gemological Institute of America's ‘brilliance’ 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.
References
- Gem Evaluation Method Earns Patent, Rapaport News, August 2008
- GIA's Response to Letter to the Editor of the Australian Gemologist Pricescope Diamond Journal, February 24, 2007
- GIA Excellent Cut Grade Case Study Pricescope Diamond Journal, March 14, 2006
- Ideal-Scope Diamond System International Diamond Cut Conference (IDCC), January 2004
- Ideal-Scope Reference Chart Ideal-Scope Website