DESIGNING & MAKING The
BEST GEM FURNACES
IN THE INDUSTRY
With a commitment to excellence, we design and manufacture the finest gem furnaces in the industry.
From concept to reality
Gemlab was founded in 1975 by Ted Themelis to provide high-quality and dependable gemstone technology to the gemstone industry. Germlab manufactures gem treatment equipment, gemological instruments, provides research and development gem treatment projects, gemstone treatment training practical courses, and specialized books written by Ted Themelis.
Gemstone treatment equipment and apparatuses
The Heat Treatment of Ruby-Sapphire Monographs No.8-13
Gemstone Treatments – An Illustrated Guide
Gemstone Technology Updates
Stay updated on the latest advancements in gemstone technology! From innovative cutting techniques to sustainable sourcing, we bring you the latest in gemstone processing and quality enhancements.
What Our Customers Say
The precision and detail in GEMLAB's reports are unmatched. I always rely on them for accurate gemstone certification.
Client Announcements & Notices
Special Discount on Gemstone Certification
Take advantage of our limited-time discount on gemstone certification…
Upcoming Webinar on Gemstone Treatments
Join us for an insightful webinar hosted by industry…
New Gemstone Analysis Services
We are excited to announce the addition of our…