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GIA Laboratory, Bangkok

10th Floor U-Chu-Liang Building
968 Rama IV Road Silom Bangrak Bangkok
10500 Thailand

Tel: (66) 2 632 4090
Fax: (66) 2 632 4096
Email: giabkklab@gia.edu

Office Hours:
10.00 a.m. - 5.00 p.m. (Mon-Fri)
 

GIA Laboratory Bangkok Research Staff:

The research team at the GIA Laboratory Bangkok is an international team composed of eight Thai, British and French gemologists. It is a mix of young and experienced, highly motivated and dedicated people working either in the "Colored Stone Department", the "Pearl Department" or the "Field Gemology Department"... All GIA Laboratory bangkok research gemologists are also working on customer stones besides their various gemological research projects.

You can contact them at giabkklab@gia.edu stating the name of the gemologist as you can find here (arranged per department)

 

Kenneth Scarratt,
"Managing Director South East Asia" and "Director of GIA Laboratory Bangkok
".

Kenneth Scarratt has more than 40 years of experience in gemology, and is considered one of the top gemologists in the world. He has extensive experience in the identification of a broad range of gem materials and detection of treatments.
Scarratt began his career in gemology with the Gem Testing Laboratory of Great Britain, where he worked with some of the well-known greats of gemology and eventually rose to be Chief Executive and Laboratory Director. During his leadership in Great Britain, their lab was affiliated with our laboratory in providing GIA grading report services to the London trade.

He headed the AIGS Laboratory in Bangkok prior to his seven year tenure as director of the AGTA Laboratory in New York. Mr. Scarratt also worked for GIA briefly in 1993 and returned in March 2005.

Scarratt has authored or co-authored articles in many gemological journals worldwide, and has co-authored two books: The Crown Jewels, and The Pearl & the Dragon. Topics of these works ranged from the causes of color in diamonds; diamond synthetics and treatments; synthetic and treated colored stones; rare gemstones; natural and cultured pearls; gemstone origins; and the British Crown Jewels. Scarratt is one of the world’s leading authorities on natural pearls, both saltwater and freshwater, as well as the rare Melo pearl. He has lectured on gemological topics in the U.S. and throughout Europe and Asia.

     

Colored Stone Department:

     
 

Sudarat Saeseaw (Kai) M.Sc., G.G., F.G.A.
"Analytical Lead Advanced Gemology"
:


Sudarat Saeseaw, is an analytical lead in advanced gemology in the GIA laboratory Bangkok. She obtained a Master's degree in Analytical Chemistry from the Mahidol University in Thailand and she is a GIA Graduate Gemologist (GG) and Fellow (FGA) of the Gemmological Association of Great Britain (Gem-A).

She is proficient in identifying and researching all gemological materials submitted for examination by GIA clients and in conducting research on materials that require more comprehensive examination. However, her main areas of expertise are spectroscopy, i.e. UV-Vis-NIR and FTIR, and chemical analysis using both Energy Dispersive X-Ray Fluorescence (EDXRF) spectrometry and Laser Ablation-Inductively Coupled Plasma-Mass spectrometry (LA-ICP-MS), which enable her to accurately determine possible treatments,  the identity of gemstones, and when possible the country of origin of certain gems.

     
 

Piradee Siritheerakul (Wint) B.Sc., G.G., F.G.A.
"Staff Gemologist"
:

Piradee obtained a specialist Gemological degree from Srinakharinwirot University in Bangkok. She is a GIA Graduate Gemologist (GG) and Fellow (FGA) of the Gemmological Association of Great Britain (Gem-A).

Her career in gemology began in 2000 when she worked as a gemological instructor prior to joining GIA and continued when she subsequently joined GIA as an instructor of GIA distance education and on campus courses.

She is currently working as a Gemologist in the GIA Laboratory Bangkok where she uses her existing experience and knowledge to operate all advanced scientific equipment and work with the GIA team in reaching conclusions during research and on clients’ stones. She specializes in testing a wide range of colored stones, and conducts much of the Diamond Verification work in Bangkok after receiving intensive specialized training from the GIA Laboratory in New York.

     
 

Ratima Suthiyuth (Mim) B.Sc., G.G., F.G.A.
"Staff Gemologist"
:

Ratima Suthiyuth studied Chemistry as her major at Mahidol University in Thailand. She is a GIA Graduate Gemologist (GG) and a Fellow (FGA) of the Gemmological Association of Great Britain (Gem-A).

Ratima began her career in 2008 as a diamond grader in the GIA Laboratory in Bangkok and subsequently joined the Colored stone Identification Department in 2011. Her background in chemistry, together with her analytical skills and practical as well as theoretical knowledge in gemology help her accurately determine and identify gem materials, whether for research purposes or when submitted by clients.

     
 

Dr. Supharart Sangsawong (Poo) PhD,
"Research Scientist"
:


Supharart Sangsawong obtained a Doctorate degree in Analytical Chemistry from Mahidol University, Thailand.  He is currently studying both Graduate Gemologist (GG) diploma from GIA and FGA qualification with the Gem-A.

He is experienced in handling a wide variety of sophisticated analytical instrumentation including atomic and molecular spectrometers. His responsibilities include data collection on all gem materials (including pearls) for research purposes in particular, and the identification of gem materials submitted for examination by clients. He plays an important part in collecting the data from samples acquired in the field by GIA’s field gemologists and in doing so is helping to collate the accurate information that exists in GIA’s comprehensive reference collection for generations of gemologists to come.

     
 

Dr. Wasura Soonthorntantikul (May) PhD, G.G.
"Trainee Gemologist":

Wasura Soonthorntantikul received her Doctorate degree in Analytical Chemistry from Chulalongkorn University, Thailand. She also holds a Graduate Gemologist (GG) diploma from the Gemmological Institute of America (GIA). In order to broaden her horizons and increase her gemological knowledge she is currently  furthering her education by studying  for FGA qualification with the Gem-A.

Besides examining client’s gemstones, Wasura also assists in operating advanced analytical instrumentation and in interpreting analytical data.

     
 

Charuwan Khowpong (Gibb), B.Sc., G.G.
"Trainee Lab Technician"
:


Charuwan Khowpong is a trainee technician in the Colored Stone Identification department . She graduated from Srinakharinwirot University with a major in material science (Gems and jewelry) and started working at the GIA Laboratory in Bangkok in 2012. She is currently studying for her Graduate Gemologist (GG) diploma at the GIA campus in Bangkok.

She is responsible for monitoring the maintenance of the laboratory equipment and collecting data for gemologists to use in reaching their conclusions on research and client stones. Charuwan is  proficient in using the majority of advanced analytical equipment in a modern well-equipped gemological laboratory such as the GIA.    

     
 

Nattida Ng-pooresatien (Joo) B.Sc., G.G.
"Trainee Lab Technician"
:


Nattida Ng-pooresatien studied Earth Sciences at Kasetsart University in Thailand and is also the holder of a Graduate Gemologist diploma (GG) from the Gemological Institute of America (GIA).

She is proficient in using the advanced analytical equipment in a modern well-equipped gemological laboratory such as the GIA including the Fourier Transform Infrared (FTIR) spectrometer, Laser Raman microspectrometer, Energy Dispersive X-Ray Fluorescence (EDXRF) spectrometer, Ultraviolet-Visible Near Infrared (UV-Vis-NIR) spectrophotometer, Laser Ablation-Inductively Coupled Plasma-Mass (LA-ICP-MS) spectrometer, as well as standard gemological instruments. She collects and supplies valid high quality data on research material and client stones to the gemological staff in order to meet the turnaround times required.    

     

Pearl Department:

     
 

Nicholas Sturman F.G.A., D.G.A.
"Manager Pearl Department
":


Nicholas Sturman has over 24 years of detailed experience in the examination of pearls. He obtained his FGA and DGA qualifications in the UK prior to joining the world renowned Gem Testing Laboratory of Great Britain, when it existed, and continued with 16 years studying pearls in the Kingdom of Bahrain where he was employed as the gemological advisor to the Bahrain Government’s Gem and Pearl Testing Laboratory.

Nick specializes in the separation of natural pearls from all types of cultured pearls using Real-Time microradiography and X-ray Computed microtomography (CT) units in-house at the GIA Bangkok laboratory. He also oversees the final work on jobs before they are completed and works with his team to complete client work quickly and accurately.

As well as writing contributions to various gemological publications he has also given presentations in Thailand, Singapore, Japan, The United Kingdom, France, Switzerland and various countries within the Middle East. Nick also assists with teaching and educational seminars when required.

     
 

Artitiya Homkrajae (Fai) B.Sc., G.G., F.G.A.
"Senior Staff Gemologist"
:

Artitaya Homkrajae is a Senior Staff Gemologist within the Pearl department. She studied Earth Science as her major and gemology as her minor at Kasetsart University. She holds a Graduate Gemologist Diploma (GG) from The Gemological Institute of America (GIA) and FGA Diploma from The Gemmological Association of Great Britain (Gem-A). She is also the holder of a GIA Graduate Pearl Diploma.

Her career in gemology began as a diamond grader at the GIA Laboratory Bangkok in 2007, and she subsequently transferred to the Pearl Identification department in 2010 where she learnt to operate the advanced equipment needed in pearl identification, and analyze the results. She was promoted to the position of Senior Gemologist in the Pearl Identification department in early 2013.

     
 

Areeya Manustrong (Aom), B.Sc.
"Trainee Staff Gemologist"
:

Areeya Manustrong is a Trainee Gemologist within the Pearl Department. She studied Material Science (Gems and Jewelry) at Srinakharinwirot University. She holds a Graduate Pearl diploma and Graduate Diamond diploma from The Gemological Institute of America (GIA) and is currently studying for her Graduate Gemologist diploma from GIA.

She started working with the GIA Laboratory in Bangkok after she graduated in 2011, and chose to study pearls as it was a topic she worked on whilst studying at Srinakharinwirot University. Areeya has learnt to use the majority of the advanced equipment available in the GIA to test client’s pearls and for research purposes.

     
 

Nanthaporn Somsa-ard (Kwang) B.Sc.
"X-ray Technician"
:

Nanthaporn Somsa-ard is an X-ray Technician within the Pearl Identification Department. She earned her bachelor degree in Geology from Chulalongkorn University, Thailand. She also possesses a Graduate Pearl diploma and Graduate Diamond diploma and is currently studying to obtain her Graduate Gemologist diploma (GG) at Gemological Institute of America (GIA) in Bangkok.

Her particular area of expertise is in instrumental analysis applied to pearl identification, particularly the use of all X-ray equipment including Real-Time (RTX) microradiography and X-ray Computed microtomography (CT).

     

Field Gemology Department:

     
 

Vincent Pardieu B.Sc., A.G., G.G.
"Senior Manager, Field Gemology Deparment"
:

Vincent Pardieu studied science and business in France before becoming a tour guide specializing in Europe and Asia. He studied gemology at GGA in Yangon (Myanmar) and at GIA Thailand. In 2004 he became the Director of the AIGS Gemological Laboratory in Bangkok and worked on gemstone treatments like lead glass filled rubies and the origin determination of gemstones.  Whilst at the AIGS he started a field gemology program that took him to numerous ruby and sapphire deposits in Asia and Africa. In February 2007 he joined the Gubelin Gem Lab as a gemologist specializing in the origin determination of gemstones.

He returned to Bangkok in December 2008 as supervisor, field gemology for the GIA Laboratory Bangkok in order to build the first, and to this day, only field gemology department in a modern gemological laboratory. Since being employed by the GIA he has led 46 successful field expeditions to gemstone mining areas in Thailand, Cambodia, Laos, Vietnam, Myanmar (Burma), Australia, Sri Lanka, Pakistan, Afghanistan, Madagascar, Kenya, Tanzania, Zambia and Mozambique in order to collect samples for the GIA reference collection. Although traveling to gemstone mining area utilizes a significant part of Vincent’s time, he does nevertheless spend most of his time with his team in the laboratory cataloguing, fabricating and studying the samples collected.

Vincent is known for his numerous expedition reports and articles published regularly in various magazines like Gems & Gemology or InColor, or shared via the internet either on GIA websites (www.giathai.net and www.gia.edu) or his own website: www.fieldgemology.org. He has lectured on gemological topics in the U.S., Europe and Asia.

     
 

Jonathan Muyal G.G., F.G.A.
"Research Assistant Field Gemology"
:

Jonathan Muyal was a professional boxer for 12 years, winning many titles and medals around the world. A former student of GIA Thailand, he holds a Graduate Gemologist Diploma (GG) from the Gemological Institute of America (GIA) and FGA Diploma from The Gemmological Association of Great Britain (Gem-A).
 
After completing his gemology studies, Jonathan started traveling to gem mining areas in Thailand, Cambodia, Sri Lanka and Madagascar as an assistant and photographer for Vincent Pardieu. During the expeditions, his focus, discipline, resilience and language skills (Jonathan speaks, reads and writes French, English, Spanish, Thai, Japanese, as well as some Korean, Portuguese, Italian, Arabic and Hebrew) proved to be great assets to the team.

After some lapidary training, Jonathan started collaborating with the GIA Laboratory Bangkok as a lapidary. In January 2011 he officially joined the laboratory as “Research Assistant” in the field gemology department mainly focusing on sample fabrication. During his employment he has fabricated more than 1,000 research samples with great care and accuracy. Besides his lapidary work, Jonathan also regularly works on sample identification, and inclusion photomicrography and identification using Raman spectroscopy.

     
 

Sasithorn Engniwat (Bell), B.Sc.
"Librarian"
:


Sasithorn Engniwat graduated from Srinakharinwirot University with a major in material science (Gems and jewelry) and is currently studying for her Graduate Gemologist diploma from GIA. She started working with the GIA Laboratory in Bangkok after she graduated in 2011.

She is working as Librarian and deputy lapidary in GIA Bangkok’s field gemology department. As such she receives, handles and follows requests for reference samples coming from GIA gemologists. Her duties mainly involve working on the GIA reference database particularly regarding the cataloguing of GIA research specimens when field gemologists return from the field, including the photography of these reference samples and some lapidary work. Her attention to detail and organizational skills make her a valuable asset to the department.