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PRODUCTS & SERVICES PROVIDED BY T. THEMELIS - GEMLAB

COURSE #510-CLASS #41 January 5-10, 2015
In this course edition the course #510 is updated and the practical sessions are now include 4 heating processes performed by the students. The Pb+Co process for blue sapphire will be discussed in detail as well as the lithium heating processes. New information on heating ruby-sapphire are constantly added. Click here for course details
Course Dates
Registered:
Pending:
Available seats:
Jan.5-10, 2015
2
0
3

GEM TREATMENT EQUIPMENT NEW MODELS AVAILABLE FOR DECEMBER 2014 DELIVERY
Our affiliate website 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.


NEW - 3RD EDITION OF THE "The Heat Treatment of Ruby & Sapphire"
The 3rd edition of the most authoritative book on the subject is is currently updated and revised. More than 520 full color pages; nearly 1,500 illustrations, photos; anticipated price $250/copy. Delivery is expected within 2014. Contact us to reserve your copy.

SOLD OUT: "Beryllium-Treated Rubies & Sapphires" - REPRINT IN DECEMBER 2014
SOLD OUT: "Flux enhanced Rubies & Sapphires" - REPRINT IN DECEMBER 2014
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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