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PRODUCTS & SERVICES PROVIDED BY T. THEMELIS - GEMLAB

PLEASE NOTE: THERE IS ONLY ONE "GEMLAB" AND THAT'S OUR COMPANY DULY REGISTERED IN NEW YORK, USA IN 1976 BY TED THEMELIS. . WE DO NOT HAVE CONNECTION WITH ANY OTHER COMPANY BEARING THE PERIPHERAL NAME 'GEMLAB": "GEMLAB GROUP (Canada)", "GEMLAB" (New Zealand), "THE GEMLAB" (USA), "GEMLAB" (India)", "GEMLAB" (Liechnestein), "KARAT GEMLAB" (UK), "PA GEMLAB" (Pennsylvania, USA), "GEMLAB' (San Diego, USA), "GEMLAB ENHANCHMENT" (Sri Lanka), "GEMLAB" (Brazil) AND OTHER "GEMLABS" CONFUSING THE ISSUE.

TRAINING COURSE OF HEAT-TREATMENT OF RUBY-SAPPHIRE- CLASS SCHEDULE
This class is updated to 6 full days; new data on heating ruby-sapphire are constantly added. In this session the practical sessions (actual heating processes) consist of 65% of the total syllabus. Click here for course description.

Course #
Dates
Registered:
Pending:
Available:
Status
46
Febr.18-23,2016
4
0
1
AVAIL

M80P-1700


MOGOK BOOK & POSTERS ON SALE
The book "Gems & Mines of Mogok", poster "Property Chart of Mogok Gems", poster "Gems & Mines of Mogok", poster "Geological map of Mogok", poster "Topographic map of Mogok", and the very special DVD on "Mogok-valley of Rubies & Sapphires" are offered at promotion price of US$150 including airmail-SAL postage around the world. Click below for details on each item included in this promotion. Click to order here.


STATUS ON THE 3rd Edition - "The Heat Treatment of Ruby & Sapphire" renamed "THE HEAT TREATMENT OF RUBY-SAPPHIRE - Alchemy & Science"
The 3rd edition of the most authoritative book on this subject is in the last stage of the updating process with important revisions. The 3rd edition has grown to a monster size book containing over 600 juicy, full-color pages illustrated with diagrams and photos.

I wish to thank all colleagues and clients who have been waiting patiently for the 3rd edition. Bear with me a little longer, you will not be disappointed! Due to high production costs only 500 copies will be printed.. The books will be sold directly from my lab in Bangkok. Remember, the first edition of The Heat Treatment of Ruby & Sapphire by Ted Themelis printed in 1992 was sold out in 1996. There are currently a few second hand copies selling on Amazon.com from US$350 to US$2,904...! Contact us to reserve your copy.

OTHER BOOKS BY TED THEMELIS ARE AVAILABLE FOR IMMEDIATE DELIVERY:

"Beryllium-Treated Rubies & Sapphires" - REPRINTED IN 2015! available immediately
"Flux enhanced Rubies & Sapphires" - REPRINTED IN 2015! available immediately
"Gems & Mines of Mogok"
- STILL AVAILABLE - shipped immediately


"NEW GEMSTONE TREATMENTS". As the gemstone treatment saga continues the following "new" products are now available in the market:

1. Lead-treated orange, yellow, yellow-greenish sapphires. Starting material is previously rejected light yellowish, light pinkish, light yellow-greenish natural sapphires treated with the lead-filling process using Pb-based additives. The treatment is unstable.

2. Surface Cobalt Diffusion Treated natural sapphire. Starting material is near-colorless natural sapphire treated with the surface diffusion process using Co-based additives. Color penetration to 0.3-0.4 mm below the surface. The treatment is unstable.

3. Surface Cobalt Diffusion Treated flame-fusion sapphire. Starting material is colorless flame-fusion sapphire treated with the surface diffusion process using Co-based additives. Color penetration to 0.3 mm below the surface. The treatment is unstable.

Above treatments among others are explained in detail in Ted's upcoming third edition of the book "Heat Treatment of Ruby & Sapphire - Alchemy & Science".


GEM TREATMENTS AND POLITICS : THE BITTER TRUTH
After 25 years in heating ruby-sapphire, I concluded that those rubies-sapphires heated with borax, cryolite and other fluxes should be classified as 'SEMI-SYNTHETIC" or some similar designation. Why? Fluxes cannibalize and partially dissolve part of the ruby-sapphire lattice. Conclusion: Partially dissolved corundum = partially synthetic corundum (or partially natural corundum). –Dr. Franken-Stone, Grandmaster of Gem Treatments


TED's OPINION
The word "gem" is relative and loosely used; it should be redefined. Fluxed-treated gemstones with/without chromophores and fillers are actually semi-synthetic, hybrid, or composite products and do not qualify to be called “GEMS”. Only untreated gems should be called “GEMS”. –Dr. Franken-Stone, Grandmaster of Gem Treatments


Adventures of Ted Themelis to exotic and dangerous gem mining areas around the globe. More..



 
 
 
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