Read below interesting topics on gem treatments:
Heat treatment technology
Heat treating ruby-sapphire
Beryllium detection with LIBS
Lead-filled rubies
Cranking up the heat
Treatment disclosure


OTHER GEMLAB PRODUCTS
Gemological microscopes
Gemstone sets for education

 

FOOD-FOR-THOUGHT

Our high temperature furnaces are designed to execute heating parameters provided by the operator for heat treating gems in various configuration modes. We do not sell the “know-how” technology for heating customer’s gemstones; the “know-how” technology must be developed by the end-user customer. We only sell our furnaces and related gem treatment equipment as per specifications, capabilities and limitations.
It is like selling a rice cooker: the user should know what type of rice to select, slow or fast heating-cooling, cooking temperature and time, water, and other ingredients to cook the rice as desired. It is a certain recipe, not applied to every kind of rice.
If you are novice in this subject, I suggest to read and understand my book "The Heat Treatment of Ruby & Sapphire" before thinking to buy any of the equipment offered for sale. Likewise, for the potential, but seriously dedicated end-user, I suggest to take my course #510 offered periodically in Bangkok before buying any gem treatment equipment.

DESIGNING & MAKING THE BEST GEM FURNACES IN THE INDUSTRY -from concept to reality
Based on our 37 years experience involved in the gem treatments we have concluded that the best design for heating ruby-sapphire and other gemstones is to use the vertical muffle configuration system for two important reasons:
a) to facilitate desired atmosphere conditions (or vacuum) and
b) to allow rapid/slow removal of the stones from the furnace.
These principles are implemented in our lab where the actual fabrication of these muffle furnaces takes place.Take a look in our lab.

1.Concept & simulation

2.Prototype & testing

3.Production

WE WILL BE EXHIBITING AT THE FACETS SHOW IN COLOMBO, SRI LANKA (Sept.4-7,2014)

Ted Themelis will be exhibiting at the 'Facets' gem-jewelry trade show in Colombo, Sri Lanka from September 4 to 7, booth J122 in HALL B. Furnace model M50P-1700, TA-100 temperature alarm and other gem treatment equipment will be exhibited where live demonstration will be held during the show; gemstone traders will have the opportunity to see and experience the best gemstone equipment available in the industry. Consultation will be provided during the show. One complete M50P-1700 furnace will be available for immediate delivery at the end of the show.

SEMINAR BY TED THEMELIS ON "HEATING SAPPHIRE", COLOMBO, SRI-LANKA
PRESENTER: Ted Themelis
PLACE: Hilton Colombo, Colombo, Sri Lanka (subject to change)
DATE-TIME: September 7, 2014, 9:00 AM to 12 (noon)
TOPIC: "Heating Sapphire"
COST: US$60 per person
PARTICIPANTS: Gem traders, gem treaters (subject to our approval); limited to 25 persons
SEAT LIMITED: Maximum 35 persons
REGISTRATION: In our booth J122, Hall B, FACETS show) or at the door of the venue.
DESCRIPTION: Ted Themelis, an internationally recognized authority in gem treatments for the past 37 years, will present this complicated topic with minimum technical terminology and scientific jargon; he will explain the problems and offer several suggested solutions. How to handle the oxidizing-reducing atmosphere attribute in heating rubies-sapphires; how to obtain controllable atmosphere conditions; strategy in heating sapphires; how to choose proper furnaces for heating corundum; do's and don't in heating methodology. The sessions will be presented in Power Point complimented with actual demonstrations and concluded with questions addressed by the participants. WE EXPECT FULL HOUSE AT THE SEMINAR, SO REGISTER EARLY

 
Model M50N-1700: GemLab Mini Muffle High Temp. Furnace
Model M50P-1700, known as "mini-muffle" furnace, is a "light-weight", 50 mm muffle bottom loaded furnace, designed for desk top use. The furnace is suitable for heating 1,100 carats of rubies-sapphires to 1700oC actual temperature in different setup modes with/without chemical additives in full atmosphere conditions or in vacuum, with fully controllable slow or rapid cooling. This furnace is very reliable and accurate, built with the best engineering features availble to last for long time.. more... 
IN STOCK FOR IMMEDIATE DELIVERY
Model M80P-1700: Gemlab Maxxi Muffle High Temp.Furnace
The new model M80P-1700, known as "maxxi-muffle" furnace, is a medium size lab furnace providing great flexibility and performance. The furnace is suitable for heating 3,200 carats of rubies-sapphires to 1700oC actual temperature in different setup modes with/without chemical additives with/without atmosphere conditions or in vacuum, with fully controllable slow or rapid cooling. Model M80P-1700 is very reliable and accurate, built with the best engineering features not available anywhere else. more... 
PRODUCTION READY FOR DELIVERY AT END OF NOVEMBER 2014
MODEL HPLT-100c
High Pressure-Low Temperature "OILING" APPARATUS
New and improved model HPLT-100C is a desk-top, light weight apparatus produces controllable pressure to 8,700 psi (about 600 bar) at controllable temperature 80oC. User-select temperature corresponds to analogous pressure. The apparatus is used to induce any type of oil, resin and oleoresin into the surface-reaching cracks of emeralds and other beryls, rubies-sapphires and other gems. more...
IN STOCK FOR IMMEDIATE DELIVERY

Comparison features between all Gemlab models, setting up heat-treatment facility and consumable required

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