www.themelis.com - ADV-Gem adventures

GEM EDUCATION : Gem treatment equipment

The following types of equipment have been used in the gem treating. There are no standard methodology used by the gem treaters; each treater uses his own treating methodology and equipment. The following images are taken from Ted Themelis' new book "Gem Treatments" to be released later this year and undoubtedly is the largest collection of photos shown gem treatment equipment.

BlowBlow pipe method used in Sri Lanka for heating mostly ruby	Bellows-charcoal method in Sri Lanka for heating ruby	Bellows-charcoal method in Sri Lanka for heating ruby	Bellow-charcoal method in Burma for heating ruby	Ted Themelis' bleaching process for corals and other gems
"Oxygenated" bleaching process for whiting corals and other gems	Capsule for bleaching out graphite inclusion from diamond	Coke and air-blower 1200-C furnace for heating sapphire in Thailand	Coke furnace 1000-C used in China for heating dark blue sapphires	Electric furnace 1400-C used in India for heating gems
Electric furnace 1450-C used in China for heating corudnum	Electric furnace 800-C used everywhere for annealing topaz, tourmaline, quartz, etc.	Electric furnace 1700-C installed in Kenya for heating corundum	Pressure - vacuum 1800-C furnace for heating corundum (made by Linn, Germany)	Pressure-vacuum 1800-C furnace for heating corundum (made by Linn, Germany)
Electric furnace 1650-C with atmo. control for heating ruby-sapphire	Themelis' electric furnace 1200-C with atmo. Control for annealing tanzanite, quartz, etc.	Electric furnace 1200-C used in Australia for "cleaning" sapphires prior to heating	Electric furnace 1700-C with gas purge used in Australia for heating sapphires.	Themelis' electric furnace 1800-C with atmo. Control for heating ruby-sapphire
Electric furnace, graphite element furnace 2000-C+ for research	Electric induction 1800-C furnace for heating corundum	Electric furnace 1700-C with atmo. Control for heating ruby-sapphire installed in Burma	Ceramic cup wrapped with electrical resistance wire to deliver temperature of 1000-C for heating ruby-sapphire	Electric kiln 1200-C installed in Mae-sai (Thailand) for heating ruby-sapphire
Electrical resistance apparatus for treating sapphire at 1000-C (Russian lab)	Electric induction 1800-C furnace for heating corundum in Vietnam	Themelis' electric 1800-C furnace with atmo.cognrol for heating Vietnamese ruby	Typical Thai diesel-oxy 1650-C furnace for heating corundum	s Oxy-LPG gas combustion 150o-C furnace for heating corundum
Oxy-LPG "Lakmini" furnace 1800-C made in Sri-Lanka for heating corundum	Oxy-LPG modified "Lakmini" 1800-C furnace made in Sri-Lanka for heating corundum	Thai oxy-LPG furnace for heating corundum	Oxy-LPG-air combustion furnace 1800-C made in the USA for heating corudnum	Themelis' oxy-LPG-air combustion furnace 1800-C made in the USA for heating corudnum
Original Oxy-LPG-air combustion furnace 1800-C made by Toda (Japan) for research purpose	Acetylene 1900-C combustion in Sri Lanka for heating corudnum	HPHT apparatus for treating diamond	HPHT apparatus for treating diamond (Nova, UT), USA)	HPHT apparatus for treating diamond (Nova, UT), USA)
BARS apparatus for treating diamond (Russia)	Hi gh-pressure cookers for used for impregnation process of turquoise, coral, etc.	Dyeing process for agates and other gemstones	Impregnation process for dyeing jadeite in a Chinese gem treatment facility	The oiling process using "Joben" as performed in Jaipur on emeralds an other stones
High pressure apparatus for oiling emeralds in Colombia and elsewhere	Low pressure apparatus for oiling emeralds in Brazil	High pressure apparatus (A. Groom) for oiling emeralds in the USA	High pressure apparatus for oiling emeralds and other gems in Thailand and elsewhere	High pressure apparatus for oiling emeralds and other gems made by Ted Themelis