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COURSE #510-CLASS #41 January 5-10, 2015 *** UPDATED TO 6 DAYS ****
The training course #510 is finally updated taking the topics to new levels of understanding the heat treatment of ruby-sapphire. One extra day is added to cover all the new issues and information; so the course is now 6 full days. The practical sessions have increased to include 4 heating processes performed by the students using two special furnaces running concurrently. The updated lithium carbonate heating process for rubies is discussed in detail and performed in the practical session. New information on heating ruby-sapphire is constantly added. Class is FULL. Click here for course details
Course Dates
Registered:
Pending:
Available seats:
Jan.5-10, 2015
5
0
0

COURSE #510-CLASS #42 March 9-15, 2015
This class #41 is reserved for a special group of gemologists from a major commercial gemological laboratory. Class is FULL


COURSE #510-CLASS #43 May 18-23, 2015 *** UPDATED TO 6 DAYS ****
This class is under formulation and the dates are only indicative. If you are interested to attend, please email your preferred dates and will work something out. New information on heating ruby-sapphire are constantly added. Click here for course details.

Course Dates
Registered:
Pending:
Available seats:
May 18-25
1
0
4

GEM TREATMENT EQUIPMENT NEW MODELS AVAILABLE FOR DECEMBER 2014 DELIVERY
Our affiliate web site provides all information on our high temperature gem furnace NEW models M50P-1700, M80P-1700, oiling model HPLT-100D and related equipment we fabricate in our workshop in Bangkok.

www.gemstonetreatments.com

M80P-1700


BOOK PROMOTION B4-2014 "GEMS & MINES OF MOGOK"
Ted's "Gems & Mines of Mogok" , poster "Property Chart of Mogok Gems", poster "Gems & Mines of Mogok" and the very special DVD on Mogok composed in 2008 are on now on sale. List US$219. Promotion price US$175 including airmail-SAL postage around the world. Click below for details on each item included in this promotion. Order promotion B4-2014 here.


UPDATED STATUS: 3rd Edition - "The Heat Treatment of Ruby & Sapphire"

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 850+ juicy, full-color pages consisting of two volumes.

Volume I. The topics in this volume are focused on the attributes of rubies & sapphires (color irregularities, lattice abnormalities, clarity, porosity, diaphaneity & other imperfections) and their effect in heating under different heating parameters and profiles. Heat treatment technology, practical applications and heating equipment are discussed in detail. This volume contains over 450 full color pages with over 1,100 illustrations, photos, and diagrams.

Volume II. The different types of the rubies & sapphires emanated from over 50 confirmed mining sites are discussed in detail and their corresponding heat treatment experiments are reported as performed by the author in his gem treatment laboratory in Bangkok. This volume contains over 350 full color pages; over 800 illustrations and photos. Numerous appendices with technical references and tables are provided. Contact us to reserve your copy.

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 for each volume. The books will be sold directly from my labin Bangkok. Amazon and other book dealers will not be involved. 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$343 to US$3,115...! Contact us to reserve your copy.


"Beryllium-Treated Rubies & Sapphires" - REPRINTED - AVAILABLE NOW..!
"Flux enhanced Rubies & Sapphires" - REPRINTED - AVAILABLE NOW..!
SOLD OUT: "Mogok - Valley of Rubies and Sapphires" - NO REPRINT IS EXPECTED

OUR OPINION
The word "gem" should be redefined. Heavily treated gems 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

NEW! HOT, OFF THE THAI GEM OVENS: COBALT-INFUSED LEAD-GLASS SAPPHIRES
“Cobalt-Infused Lead-Glass-Filled Sapphires” are now available in the world market and they are available for immediate sale in sets as pictured below or in individual stones, directly from Ted's Gem Kitchen in Bangkok. These blue sapphires have been heat-treated with lead, silica, sodium, potassium and cobalt added for color, using “FRIT” technology.   read more..

LITHIUM PROCESS... THE SAGA CONTINUES....
As promised the new generation of heat-treated gems arrived. Ted is now treating with new innovative methodology untreated (or previously treated) rubies, sapphires, spinels, grossulars and other gems utilizing flux-aided additives including lithium, boron, sodium, aluminum and silicon at temperatures 650oC to 1350oC for soaking periods ranging from few minutes to several days. On certain type of stones, this treatment is based on Lithium additives and removes the purple tinge from rubies; brown tinge from red-brown spinels; brown tinge from spessartites-hessonites. The new treatment also enhances the clarity, transparency, luster and brilliance on selected types of gems. Lithium-treated rubies show rutile needles and particles; rarely show growth pattern; commonly show twin lammellae; distorted zircon and other guest mineral inclusions. Detection of the treatment range from easy to very difficult; a lab issued a Gemstone Report declaring the stone "untreated"; another lab couldn't detect lithium -the key ingredient of the flux- using LAICPMS. The decolorizing mechanism (removing the brownish tinge) and color alteration of the lithium-treated stones is unknown. But the fact is that the color of these Lithium-treated stones is distributed throughout the lattice of the crystal, not confined at/below their surface and have nothing to do with the surface-subsurface treated gems. All gems treated by Ted are stable and durable to light and normal wear (as their untreated counterparts); the treatment does not create special care under normal “wear-and-tear” and the process is permanent, repeatable and irreversible. All these Lithium-treated gems are sold with full disclosure (see Gemstone ID-card). Stay tune as the new gemologist's nightmare is around the corner from Dr. Franken-STONE.
Grossular
Ruby
Sapphire
Spinel

OUR MOTTO
The word "gem" should be redefined. Heavily treated gems are actually semi-synthetic, hybrid, or composite products and do not qualify to be called “GEMS”. Only untreated gems should be called “GEMS”. –Dr. Frankenstein, Grandmaster of Gem Treatments

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



 
 
 
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