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About Gemlab

Established in 1975 by Ted Themelis and his family, Gemlab Inc. has remained committed in serving the gem trade industry representing a heritage of innovation, experience and trust for nearly four decades.. Gemlab provides diversified and broad range of products and services for the gem-jewelry industry: Manufacturing of gemological microscopes, research & development projects, gem treatment services and fabrication of high-temperature furnaces with gem treatment installations around the globe. In our lab we have in stock over 2,100 treated and untreated ruby & sapphire master reference specimens from nearly all major mines of the world. Our company maintains a gemological data bank & image library of over 10,000 items featuring gems, minerals, gem-mining, gem-processing and related topics, specializing in Burma (Myanmar) gems and gem deposits. Our in-depth, diversified knowledge on these subjects enable us to offer expert consultation, solving your educational, technical and information problems. In our lab, the following state-of-the-art furnaces and related gem treatment equipment are installed and used in our applications and projects, as well as for training our students:

  • 4 High-Temp (1800°C) electric muffle furnaces
  • 2 Low-Temp (1100°C) electric muffle furnace with special controls
  • 1 High-Temp (1800°C+) LPG-OXY combustion furnace
  • 1 High-pressure-low temperature hydrothermal capsule-vessel
  • 2 High-pressure, low-temp (10,000 psi, 250°C) apparatus for oiing fissure in gems
Gemlab heat treatment facility and gem treatment center in Bangkok, Thailand
 
   
 
 
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