AGTA GTC's Laboratory Update for December 22, 2006
Season's Greetings to all our Customers and Friends

In this message…

  1. Small is Beautiful
  2. GIT Conference
  3. LMHC Update
  4. Get Ready for Tucson
  5. Tucson Lecture Schedule
  6. Pricing Update
  7. Garry Du Toit

Small is beautiful

When it comes to testing precious gemstones, we understand that clients have a variety of choices. Not unlike buying food, one can shop at Wal-Mart or a small, specialty delicatessen.

Large supermarkets have driven a number of smaller stores out of business, but the specialty shops remain because many clients do not simply want low prices, but appreciate better service and better products.

There are a number of reasons why we believe the AGTA GTC is the lab of discerning customers. Here are but a few:

     We look forward to serving you in the new year and wish you all a happy holiday season.

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GIT 1st International Gem and Jewelry Conference

The AGTA GTC's Lore Kiefert and Richard Hughes presented papers recently at the Gem and Jewelry Institute of Thailand's (GIT) 1st International Gem and Jewelry Conference in Bangkok, Thailand. This conference coincided with the celebration of the 60th anniversary of the coronation of Thailand's King, H.M. Bhumibol Adulyadej. Approximately 150 guests from around the world attended the two-day conference. The subjects presented were varied, with most concerning colored gemstones.

Following this conference, which was extremely well organized, a two-day field trip was made to the important gem city of Chanthaburi. This included a visit to a cutting factory, a heat treatment facility and a sapphire mine.

Heating oven

Oven for treating sapphire in Chanthaburi, Thailand.
Photo: Lore Kiefert/© AGTA GTC.

Sam-Maung Keaw-Whane

Sam-Maung Keaw-Whane, one of Thailand's first heat treaters.
Photo: Lore Kiefert/© AGTA GTC.

     At the cutting factory, we were introduced to one of Thailand's first heat treaters, Mr. Sam-Maung Keaw-Whane, who began heating corundum in 1968. Mr. Keaw-Whane started in the jewelry business producing doublets. While applying heat to gemstones during that process, he noticed changes in color and inclusions. This led to his first experiments, which he steadily refined over the years.

Participants also visited a traditional heating facility, along with one of Thailand's last operating sapphire mines. Some of the group members struck it lucky, finding some small sapphires among the tailings.

Sorting sapphire

Sorting sapphire rough in Chanthaburi, Thailand. Photo: Lore Kiefert/© AGTA GTC.

Sapphire mine in Thailand

One of Thailand's last operational sapphire mines, located just outside Chanthaburi.
Photo: Lore Kiefert/© AGTA GTC.

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LMHC Update

From December 2–4, preceding the GIT Conference, the Laboratory Manual Harmonization Committee (LMHC) meeting was held at the premises of the GIT in Bangkok. The seven members discussed and re-evaluated issues such as the report wording for berylium (Be)-treated sapphires, emerald and Paraíba tourmaline. Information Sheet 2 was amended, and with the amendment a new information sheet (for heat only) was introduced. Information Sheet 5 (emerald) was completed and will now be evaluated by the various boards of the participating members. The same applies for Information Sheet 6 (Paraíba tourmaline), which was the most controversial one and, therefore, leaves laboratories the most freedom in wording their reports.

Beyond these issues, LMHC members discussed various detection limits of instruments and will start a program comparing these. This should help even more to harmonize lab results.

The LMHC consists of seven of the world's major laboratories. They include the AGTA Gemological Testing Center (USA), CISGEM (Italy), GAAJ (Japan), GIA (USA), Gemological Institute of Thailand (Thailand), Gübelin Gem Lab (Switzerland) and SSEF Swiss Gemmological Institute (Switzerland). With this mixture of international laboratories with international clients we hope to bring our clients a better product which fulfills the demands of all levels of the gemstone market.

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The AGTA GTC Mobile Laboratory Opens on Tuesday, January 30, 2007, at AGTA GemFair™ Tucson

Once again, the AGTA Gemological Testing Center (AGTA GTC) will be participating in AGTA GemFair™ Tucson.

Mobile Laboratory

Our Mobile Laboratory will provide a wide range of gemstone testing services onsite during GemFair™. The AGTA GTC has a reputation for providing excellent service, superior value and outstanding quality. AGTA reports give your clients the confidence they need when purchasing color. Services include:

     GemFair™ and the AGTA GTC Mobile Laboratory are located at the Tucson Convention Center. The address is 260 S. Church Ave. The AGTA GTC Mobile Laboratory is located in the Onyx Suite on the main level.

Dates and Hours

The AGTA GTC Mobile Laboratory opens one day before GemFair™. The laboratory is open as follows:

Note that the AGTA GTC Mobile Laboratory Facility will be opening on January 30th, one day before the AGTA GemFair™ Tucson (which runs January 31 to February 5, 2007). This will allow vendors to have their gemstones tested so they are ready for sale during the show.

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Tucson Lecture Schedule

As every year, the AGTA GTC's staff will be giving various lectures during the AGTA GemFair™ Tucson.

Thursday, February 1, 2007

Friday, February 2, 2007

Saturday, February 3, 2007

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Pricing Update
Approximately a year ago, the AGTA GTC moved to a keystone pricing scheme. Unfortunately, this created confusion with some of our clients and thus we have returned to our normal pricing structure. From now on, the published online prices for our services will not be keystone, but will be actual prices. We regret any confusion that this change has caused. Our complete fee schedules can be found at this link: