1 March 2006
The use of high-temperature lattice-diffusion heat treatment with beryllium to lighten the color of blue sapphires.
Home
23 September 2004
A discussion of the flux-healing treatment of rubies. This article was awarded the Richard T. Liddicoat Journalism Award by the American Gem Society in 2005.
1 January 1998
A curated list of the most important books on gems, gemology, jewelry, mineralogy and allied fields.
1 July 1995
A brief history of the heat treatment of ruby & sapphire, from ancient times to the modern era.
1 August 1997
A description of the fracture healing of Mong Hsu ruby, along with the problems this has created in the gem trade.