Thanks and disclaimer:


Important Note: The author: Vincent Pardieu is an employee of GIA (Gemological Institute of America) Laboratory Bangkok since Dec 2008. Any views expressed on this website - and in particular any views expressed by Vincent Pardieu - are the authors' opinions and do not necessarily reflect the opinions of GIA or GIA Laboratory Bangkok . GIA takes no responsibility and assumes no liability for any content on this website nor is GIA liable for any mistakes or omissions you may encounter. GIA is in particular not screening, editing or monitoring the content on this website and has no possibility to remove, screen or edit any content.


Conservation Gemology. org

This website is home for:

Vincent Pardieu (B.Sc., GGA, G.G.). Vincent is "Supervisor, Field Gemology" at GIA Laboratory Bangkok. He is a gemologist specialized on "Origin determination of gemstones" and for the past 10 years has focus on visiting gem mining areas in Asia and Africa. His writtings can also be found in


It is also home of several of VP regular traveling companions. Among them are Jean Baptiste Senoble, Lou Pierre Bryl and Stephane Jacquat who were with VP in the field in Mozambique when the concept behind this website was suddenly making a lot of sense.
It is also home for another friend with a genuine passion for gemstones, conservation and development issues:

Laurent E. Cartier is a geologist and gemmologist based in Switzerland. He is currently pursuing a PhD in Environmental Sciences on the sustainability of  marine pearl farming, but also continues to work on gemstones. His current projects on pearl farming can be found at


“Conservation Gemology” is very similar in many aspects to its twin-website: but will not focus on presenting traditional field expedition reports. Instead you will find here blogs and articles with a focus on the conservation aspects related to gem mining in the areas visited by the author.


What is gemology?


Gemology is by definition the knowledge about gems; it is fascinating to the author as it is covering many aspects like science but also history, geography, trade and art. Most websites and publications are dealing with technical and scientific aspects of gemstone identification or trade aspects but other aspects like history, geography and art should not be neglected as they are really interesting and useful to understand gems, their trade and the reasons why they fascinate people.


What about conservation?


Conservation is basically an ethic of resource use. Its focus is upon maintaining the health of our planet in order for the future generations to be able to continue to enjoy it. Conservation does not means keeping away people out from nature, but its goals are to help men to find sustainable ways to use natural resources for future generations to be able to continue benefiting from these natural resources.


Conservation and Gemology?


To associate "Conservation" and "Gemology" might look unusual as gemstone mining is not really sustainable: Indeed a gemstone which was mined will never be mined again. Nevertheless, in a world where conservation issues become day after day more and more serious and where more and more people are getting conserned about issues dealing with the future of our planet, many people inside the gemstone industry but also some people just enjoying gems show an increasing interest in the origin of these beautiful gems and are bring to think about issues regarding the way gems are produced nowadays.


Thanks to the fact that in many cases at least for rubies, sapphires and emeralds, origin determination of gemstones is in most cases possible, then people have some information about the places where gemstones were mined. Recent events like the US and European ban on "Burmese rubies" have shown that the idea about origin and origin determination might, we like it or not, going now beyond the simple idea of romance.


As the author could see during the last 10 years traveling to gem mining areas in Asia and Africa many gem mining area are truly beautiful.

Gemstones can be found sometimes within areas dedicated to conservation. With East Africa, a region famous worldwide for its national parks, beconing more and more a major source of colored gemstones, thus it might be interesting to think about a way for gemstone mining to be an ally of conservation, instead to be one more thread people interesting in the conservation of these beautiful areas will have to face: If the arrival of hundreds of illegal miners can be a disaster for a protected area, on the other hand a well managed ethical gem mining operation concerned about conservation issues could help to finance conservation programs which could benefit to the whole area including its local population.


Visiting such gem mining areas, and in particular a new ruby mining area located inside the Niassa National Reserve in Mozambique, I was aksed by conservationists working for the reserve if I could help.

Since my childhood in countryside France I'm deeply interested in nature and conserned about conservation. The fact is that during the last 10 years I was given the chance to travel and to visit many gemstone producing areas where i could see some interesting things and many things which could have been avoided. I decided then to build this website as a tool to help people working in conservation and others working in the gemstone industry to understand that they might benefit a lot working with each other.


- - -


Should the Niassa lions be afraid of gemstones?


To illustrate that question the author choosed to place on the top banner of Conservation Gemology a lioness and a blue star sapphire. The first to remember our adventures trying to visit a new ruby mining area located inside the Niassa National Reserve in Mozambique and the second as a symbol of luck, faith and hope.

May be the Niassa Lioness should not be afraid about the gem, but it probably could be conserned about the people getting a gem fever and coming to Niassa mining gemstones.


The whole question is about people as this is what the gem trade is all about: People. If the people mining there are conserned about conservation, then the lioness has nothing to be worried about. But if not, then gem mining areas in Niassa might become very hostile areas for Niassa lions and a serious consern for conservationists trying to protect this area for the future generations.


Could gems found in areas dedicated to conservation be a chance for conservationists?"


These are important question at least for people like Dr. Anabela Rodrigues and Vernon Booth from the Niassa National Reserve are asking themselves during that Winter 2009 while the author is working on this website.


It is an interesting question question which can be applied to the whole region where gems are found in areas dedicated to conservation.


Could the gemstone industry become an ally of conservationists to protect the gems of the living world that are truly National Parks and the unique East African Wildlife?


Could gems bring some sustainable job opportunities for the local population to help them to develop and protect Niassa for their own benefit and the benefit of the rest of the planet?


This is what conservation gemology is about.


You will then find here some blogs and article about gem mining and conservation. We hope that you will find them interesting and useful.


All the best,



Vincent Pardieu, December 15th 2009.



Website Map


Index page: Vincent Pardieu's Blog

About the Author

About me : How did a countryside Frenchman became a "Shameless Travel Addicted Gemologist and Conservationist"? ( Under construction)


Contact the author:


Write Comments:

Fieldgemology Page on facebook



"Conservation gems: Beyond Fair Trade?", by Laurent Cartier and Vincent Pardieu, Jan 2012


"Fair Trade and Conservation: “When origin matters", 14th ICA Congress, Brazil, 2011.

Find our blogs using the following Keywords:

     Fair trade
     national geographic

Find our photos using the following Keywords:

     Ha Long
     Minh Tien
     pearl farm
     star ruby
     Tan Huong

Discover Conservation Gemology newsletter:
(One of these days...)



THANKS for their support
for our field expeditions since 2005:


about gems, gemology, field expeditions, studying gemology, minerals, jade, pearls or jewelry?
We recommend these FORUMS
where the author is contributing:

Interesting reference website regarding CONSERVATION and GEMOLOGY

To finish here are some BOOKS about

Conservation and Gemology
the author have read and appreciated and would like to recommend to people willing to learn more about gemstones, gemology and the places where gemstones are found:



Creative Commons License

The photos and articles on are licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.
Feel free to use the photos and articles with links and credits. No commercial use without permission.
All the best,

October 18th, 2012 | Keywords:Madagascar , Didy , Ruby , Sapphire Travel |
Blog Title: Madagascar_Didy

Rubies and sapphires from Didy, Madagascar :

Here is a new expedition report that might interest people interested in gemstones and in conservation:

In April 2012, Philippe Ressigeac, a gem merchant recently graduated from GIA Thailand and living in Ilakaka (Madagascar) informed me about the discovery of a new sapphire deposit in Madagascar. His partner Marc Noverraz just told him that blue sapphire and also fine rubies were reportedly found near the town of Ambatondrazaka, a rice farming center located between Madagascar capital Antananarivo and Andilamena, a gem producing region famous for its rubies. The next day Nirina Rakotosaona, a Malagasy miner the author met several time in Ilakaka, confirmed this time from Andilamena the discovery and provided me some additional details about the stones he saw that convinced us that I had to find as soon as possible a plane ticket to Madagascar.

There was according to Nirina one serious issue about that deposit: It was it seems located in an area located between two National parks and according to him it was not sure yet if mining would be possible there. According to him, the new deposit was found by people working for a timber cutting company who were also searching for gold in the forest. That was something to be expected with the current high prices for gold. According to Nirina the deposit was producing unbelievable stones, that was possibly the new Ilakaka that most gem miners in Madagascar were waiting for. But the author was suddently thinking that this discovery could also be also the serious conflict between conservation and gemstone mining he was afraid to hear about since his adventure in Niassa in 2009...

"Should Madagascar’s unique biodiversity like this lemur be afraid of the arrival of thousands of gem miners in the forest near Didy? Sadly the most likely answer is yes as conservation friendly gem mining techniques and concepts likes conservation gems are still mostly nice ideas. Indeed on site, in the jungle it is to be expected that illegal gem mining will remain and even probably spread over the entire area. More than ever conservationists and members of the gem trade should consult with each other to find realistic solutions that would benefit everybody. Photo: modified from"

Didy GIA Madagascar

Discover here the extensive GIA Laboratory Bangkok FE35 Expedition Report to Didy, Madagascar.

This expedition report was published on GIA Laboratory Bangkok website (here and here) and also on GIA's main website:

Here are also the other previous publications (much less extensive) from the author about this new discovery near Didy:

Didy madagascar GIA report
On May 8th 2012 the GIA sent around the world its May 2012 G&G eBrief containing a short concise expedition report from that FE34 field expedition to Didy signed by Lou Pierre Bryl (Canada), Nirina Rakotosaona (Madagascar), Marc Noverraz (Switzerland) and the author. It is available here at the G&G eBrief archive
Didy GIA Madagascar
A more extensive report about rubies and sapphire from Didy (Madagascar) was also published in the Summer 2012, Volume 48 Issue 2 of Gems & Gemology magazine. in the Gem News International.
Didy Madagascar TGJTA

In July 2012 a short expedition report about Didy was published in the TGJTA (Thai Gem & Jewelry Traders Association) newsletter. You can get the story here.

Hoping that you have found this blog and the expedition report published on GIA websites interesting.

All the best,

December 27th, 2009 | Keywords:ruby , Niassa , Mozambique , lion Travel |
Blog Title: Rubies from Niassa: A chance for Conservation?

"Gemstones from East Africa: A Chance for Conservation?
An interesting question for conservationists.
Conservation in East Africa: A chance for the gem trade?
An interesting question for the gem trade.

May be they should speak with each other and see if they could find a way to build a win-win collaboration?"
Photo: V. Pardieu / GIA Laboratory Bangkok, 2009

Pemba, Mozambique, December 2009: Dr. Colleen Begg (See the Niassa carnivore project, the Niassa lion project) was giving a presentation about the lion population in Niassa at the Niassa National Reserve annual congress. The focus was about the different threats facing the lion population in the Reserve: A few years ago she identified trophy-hunting as one of the major threats for the lion populations in Niassa, above illegal hunting and retaliatory killings by local communities.  This prompted conservationists and hunting operators in the Niassa Reserve to start collaborating on the concept of conservation hunting. Working together, they were able to find a solution that could really help each other in order to protect lion habitats and deal with the numerous threats the lions were facing from poaching, poisoning and epidemics. Several conservation friendly lion trophy-hunting practices were put in place in Niassa and in 2009 Dr Begg was happy to report that in her opinion, as long as these rules were followed, trophy hunting was no longer a serious threat to the survival of lions in Niassa: As a result she downgraded the threat from medium to low in her 2009 annual report. This shows that something unique was happening and conservation hunting was becoming a success in Niassa despite the many difficulties.

"Waterbucks in Niassa, November 2009"
Photo: V. Pardieu / GIA Laboratory Bangkok, 2009

The case of the Niassa National Reserve is interesting as it is a huge reserve located in the North of Mozambique along the Ruvuma River and the Tanzanian border. It is also a very remote reserve: From Nampula, Lichinga or Pemba, the main cities in Northern Mozambique, it can take several days to access Niassa by land on bad roads when the weather is suitable for travelling. It is a land with dense bush, where the visitor will experience not only the beauty of the African bush but will have also to deal day and night with millions of blood thirsty tse tse flies and malaria infested mosquitoes. For a reserve to be remote and inhospitable can be an advantage but when it comes to financing conservation and protection programs to make the area attractive to tourists, it becomes extremely difficult, especially as the large animal density is much lower than in most Tanzanian and South African National Parks. Nervertheless the protection of Niassa is important as regarding the lion population is estimated between 800 to 1000 animals accounting then for about a third of the whole estimated lion population in Mozambique. That population, one of the largest in Africa nowadays could also potentially grow if the conditions were suitable, thus conservation in Niassa is important for the future of lions as wild animals in Mozambique and Africa.

"Warthogs near M'swize ruby deposit, Niassa, November 2009"
Photo: V. Pardieu / GIA Laboratory Bangkok, 2009

But conservation has a financial cost and thus the reserve needs income or to be funded. Due to Niassa specificities, like its size, the fact that it is very remote and has some human population, conservation hunting was seen as the most suitable income source for the reserve: Serious hunters would appreciate the privilege of hunting in wild, remote and pristine area. Long term hunting licenses were given, enabling the hunting operators to invest in the reserve building infrastructure like roads and airstrips. Obviously they are hoping that collaborating with scientists and conservationists, not only the lion populations would grow but also the quality of other trophy species in Niassa will increase. Such collaboration if successful would enable them to sell more high quality trophies in the future to their customers. For the people who reside in the reserve, the arrival of several hunting operators created some interesting job opportunities: Several local hunters involved in the past in poaching found jobs as hunting guides or rangers. Finally the income from trophy- hunting is not only helping the reserve to pay its personnel but also to finance several important research and conservation projects, including helping local communities. It looks like typical win-win collaboration where both parties are following on the same objective: make Niassa more beautiful, by protecting the habitats and increasing the wildlife populations.

"Elephant encoutered on the way back from the author visit to the ruby deposit in Niassa"
Photo: V. Pardieu / GIA Laboratory Bangkok, 2009

But recently Niassa had to face a new and unexpected threat that hunters and conservationists have serious difficulties to deal with: In Oct 2008 rubies were discovered inside the Niassa Reserve on the concession of a hunting operator near the village of M’sawize. Soon several hundreds of gem miners stormed the area located more than 30 kilometers in the bush from the nearest village. Food supply for the miners was an issue and within days, hundreds of people were seen travelling back and forth on the track linking M’sawize to the mining area: First walking, or using bicycles, but rapidly as ruby money was coming to M’sawize, most of the supply was carried using noisy motorbikes. The population at the mines and in M’sawize boomed with miners and dealers coming from across the region including from abroad. Groups of armed poachers were also seen in the area killing animals to provide bush meat to miners. The mining area, without sanitation, rapidly became a noisy slum full of garbage. Of course it wasn’t long before most of the wildlife left the area.

"Ruby mining pit in Niassa, November 2009"
Photo: V. Pardieu / GIA Laboratory Bangkok, 2009

The Reserve management and the hunting operators were very worried about this new threat to the reserve already endangered by illegal logging and poaching. If the wildlife and particularly the lion populations were to decrease due to such invasions by thousands of illegal gem miners, conservation hunting would not be possible anymore and the reserve would not have enough income to be able to continue to do its best to protect this unique and remote African Wildlife sanctuary.

"A rough Niassa Ruby presented to the author by one of the Niassa Rangers escorting him"
Photo: V. Pardieu / GIA Laboratory Bangkok, 2009

In July 2009 the Mozambican government took the decision to act in order to close the mining site and expel the illegal miners. Within a few days the mining area was deserted. In fact the gem miners moved on to another new ruby deposit outside the Reserve near Montepuez in the nearby Cabo Delgado province. To avoid the return of illegal mining a joint force of 10 rangers was placed near the mines. At one point this force arrested the author and his party when they tried to visit the mining site in September 2009. Nevertheless two months after, with the support of the Niassa Reserve, the author was able to visit and study the new ruby deposit.

"Under arrest in Niassa: During three days and two nights the author and his traveling companions (Left to right: gemologists Stephane Jacquat (Suisse), Jean Baptiste Senoble (France) and Lou Pierre Bryl (Canada)), had the time to think about conservation and gemology"
Photo: V. Pardieu / GIA Laboratory Bangkok, 2009

For the hunting operator and the Niassa reserve, the damages were very significant: It was not only that many animals left their hunting concession due to the disturbances created by the gem mining activity, but also the damage was serious regarding the relations they had with the local population living at M’sawize village. For the first time ever the Niassa Rangers were facing open hostility at the village as they were seen as being responsible for the loss of income coming from the departure of the gem miners. The efforts of several years trying to build good relations with the local community had been seriously damaged. Beyond that single ruby rush near M’sawize, conservationists and hunters in Niassa were feeling that if new gem deposits were to be found in within the reserve, illegal gem mining could become a serious threat for Niassa as other illegal activities like poaching and logging.

The issue was taken very seriously by the Reserve management as studying geological maps, it is obvious that the whole Niassa National Reserve has a good potential not only for ruby but also for diamonds, beryl and many other gems.  And even though it is illegal to mine in a protected area in Mozambique, the demand for these gemstones is very high and is viewed as easy money by the extremely poor local community.

After his visit to the mining site in November 2009, the author was invited by the Niassa National reserve to give a presentation about the ruby trade in East Africa at the reserve annual congress in Pemba in December 2009. If for many years South East Asia and more particularly Burma was the main source for rubies for the world gem trade, during the past few years things were changing: The ruby production from traditional deposits in South East Asia was declining and a ban is affecting Burmese rubies in the US. The discovery of the Winza ruby deposit in Tanzania in November 2007 surprised the market by the quality of its best gems. Tanzania attracted then a lot of ruby buyers. Local dealers started to search rubies not only in Winza but in all East Africa to supply the foreign buyers. In Northern Mozambique, the ruby rush in Niassa and Montepuez were probably a direct consequence of this interest for Winza rubies. With three new ruby deposits, producing fine stones, the ruby trade starts to look at East Africa as a possible interesting alternative to Burma.

"Rubies from Winza, Tanzania: The beauty of these gems attracted many foreign gem buyers Tanzania. To supply them Tanzanian dealers scouted all the region leading probably to the discovery of rubies in North Mozambique"
Photo: V. Pardieu / Gubelin Gem Lab / Piat / Swalagemtraders / Van Cleef & Arpels, 2009

At the end of the author presentation, the attendance was wondering if rubies from East Africa and particularly Niassa would be a blessing or a curse for conservation. 

It would be very sad (and possibly disastrous for the long term image of the gem industry) if gemstones like rubies, symbols of nature’s perfection and beauty were to become one of the worse enemies of East African conservation areas, these national parks that are world famous as “gems of the living world”.

On the other hand in Niassa lion hunters and conservationists are working on “conservation hunting” to ensure that wildlife will prosper and be sustainably used in the future.

Would it be possible for the gem trade to work with them on the concept of conservation gems?

The idea sounds very seducing as it would be much better if the hundreds of thousands of people visiting East Africa could be presented with “conservation gems” as safari souvenirs instead of the gem trade being looked at as partially responsible for the destruction of what East Africa is world famous for. It would be far better if gem lovers around the world had the feeling that when buying a ruby from Niassa or Tsavo they were supporting conservation in East Africa, than knowing that they were contributing to the destruction of these protected areas.

For the Niassa National Reserve, the worse case would be that M’sawize like events became the rule. On the other hand they would be interested to work on developing a “conservation gems” project in which the Reserve and its wildlife could benefit from any future gem discovery. One of the particularities of Niassa as a conservation area is that it hosts about 40,000 people inside the reserve. To get the support of the local communities is important for the success of conservation in Niassa. Most of the people living in Niassa are very poor and have no choice except using the reserve resources to live. The reserve is then trying to develop with them sustainable and conservation friendly ways to use these resources. Regarding gem mining, in that aspect, the worse case for the reserve would be to have new cases of illegal mining, but if a mining company was willing to enter into an agreement with the conservation authority to exploit mineral deposits in conjunction with a local community using some conservation friendly techniques, the Niassa Reserve management and the Mozambican governement would probably be interested to study such project.

"Scottish geologist, gem miner and conservationist Campbell Bridges, discovered green garnets in Kenya near the Tsavo National Park. The gem nowadays known as "tsavorite" owns its name to the Tsavo National Park thanks to the efforts of Bridges with the support of companies like Tiffany & Co. Associating gems with conservation areas could be an interesting way to support both gem mining and conservation: Learn more about Tsavorite"
Photo: V. Pardieu / AIGS / Gubelin Gem Lab / ICA, 2005

If the idea sounds nice, turning it into reality will be much more complicated than writing these few lines. The author is well aware of that.  But if lion hunters and conservationists could find a way to work together, the gem industry should also be able to find a way to join forces. After all unlike mining for metals like gold, copper, iron, titanium or uranium, ruby mining is rather small scale as the author could see visiting the John Saul Ruby Mine located inside the Tsavo National Park in Kenya: The mine, in operation since the end of the 1970's, is one of the world's largest ruby mine but it is nevertheless limited to about one square kilometer and cannot be seen as putting Tsavo into danger. In fact, if the mining actitity is properly done, meaning using conservation friendly techniques, ruby mining can have a very limited impact on the environment.

In the case of Tsavo, the situation could have been a case study if synergies between the national Park and the ruby mines had been created, but sadly the author is not aware of any such synergies at the moment. It seems that conservation gem mining in East African gem rich conservation areas like Tsavo (in Kenya, producing rubies and tsavorite), Manyara (in Tanzania, producing emeralds and alexandrite) or Niassa (in Mozambique, producing rubies and potentially also many other gems) is still to be invented.

"Tsavorite and rubies, like those presented by Kenyan miner Genson Micheni Musa, are mined from the Tsavo region in Kenya. With "conservation gems", the East African gem trade could take advantage of the millions of tourists visiting East African conservation areas, benefit from a good image and help conservationists to finance the protection of these gems from the living world that are East African National Parks."
Photo: V. Pardieu / Gubelin Gem Lab, 2008

If such project could be successful, gemstones from East Africa could really be a blessing for conservationists as they could help to finance conservation programs and these gems could be a chance for the gem industry to get a beautiful (marketable) product they could associate using the right marketing with some of the most beautiful places on our planet.

The issue is just so simple: Seen from the consumer point of view, a “conservation ruby” sounds obviously so much better than a “blood ruby”. Investing in conservation could give an excellent image for the gem industry in East Africa and for the promotion of East African gems. It could also create value: With more demand, their market value would increase for the benefit of the gem trade and also of conservationists. With the proper know how, branding and some good will on both sides, "East African Conservation Gems" could be a very successful project.

"Gems from Niassa like these rubies could help to finance conservation in Niassa and become symbols for the Reserve..."
Photo: V. Pardieu / GIA Laboratory Bangkok, 2009

About the author:

V. Pardieu, is field gemologist for the GIA Laboratory Bangkok. Interested in conservation since his childhood in countryside France, the author visited many gem deposits in East Africa, South East Asia and Central Asia since 2005. His expedition reports can be found on or on or


Some interesting links about Dr Colleen Begg work and Niassa:



Dr. Colleen and Keith Begg are currently studying carnivores and particularly lions in Niassa and are famous for their work on the ratel also known as honey badger: Human-carnivore conflict (2007), The Niassa Carnivore Project (2008 report, 2010 plan), The Niassa Lion Project, and the beautiful "Emerging from the shadows".

niassa The Niassa National Reserve can be contacted at the following email:, or using facebook. A complete report about illegal ruby mining in the Niassa reserve was presented by Anabela Rodrigues, the Niassa Reserve executive Diorector, in Maputo on sept 8th 2009.

About Rubies from Mozambique:


Here is a link to the Mozambique special issue where you can find this study: "FAPFH/GFF Treated Ruby from Mozambique, a preliminary report" by V. Pardieu, N. Sturman, S. Saesaew, G. Du Toit and K. Thirangoon released May 11, 2010.

LMHC Find more about Mozambique and its rubies in

Read more about Niassa and conservation:

- "Niassa-Selous-wildlife corridor" an interesting project linking the Niassa National Reserve to the Selous Game reserve with a corridor located between Songea and Tunduru (two of the most famous Tanzanian gem mining areas... see reports on

- "Selous-Niassa Wildlife Corridor"

- "Conservation of Biological Diversity through hunting": Tanzanian villages and the Niassa Reserve in Mozambique receive the "Markhor Award" from the CIC

- "The Selous - Niassa corridor in Tanzania: Biodiversity conservation from the Grassroots", by Dr. Rolf Baldus and Rudolf Hahn.

- The author also advises the visit of "Dancing with the Wild Beasts" an interesting blog providing news from Niassa.


Recommended books about conservation, conflict resolution and mining:


Saleem Ali

"Treasures from the Earth" by Prof. Saleem H. Ali.

Saleem Ali

"Peace Parks: Conservation and Conflict Resolution" edited by Prof. Saleem H. Ali

Saleem Ali

"Mining, the Enviromnent, and Indigenous Development Conflicts" by Prof. Saleem H. Ali



Important Note: Vincent Pardieu is an employee of GIA (Gemological Institute of America) Laboratory Bangkok since Dec 2008. Any views expressed on this website - and in particular any views expressed by Vincent Pardieu - are the authors' opinions and do not necessarily reflect the opinions of GIA or GIA Laboratory Bangkok. GIA takes no responsibility and assumes no liability for any content on this website nor is GIA liable for any mistakes or omissions you may encounter. GIA is in particular not screening, editing or monitoring the content on this website and has no possibility to remove, screen or edit any content.