![]() 4th January, 2004 Volume 10, Issue 25 |
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AGTA
report a negative image By
Shezna Shums A
statement by the American Gem Traders' Association's (AGTA) Gemological
Testing Centre declaring some of the Sri Lankan sapphires reaching the US
market have been treated by a new technique has damaged the island's image
as one renowned for its precious gems. The
microscopic observations of these gemstones, according to the AGTA had
indicated heating and immersion in methylene iodide, revealing a pale blue
shimmer close to being colourless following the girdle outline. In other
gemstones, a much deeper rim of light blue core is seen. Speaking
to The Sunday Leader, Chairman, National Gem and Jewellery Authority,
Tennekone Rusiripala said that the AGTA's declaration regarding the
observation of an 'unusual phenomenon' has tainted the reputation of
several countries that are known for their precious gemstones,
particularly the sapphires. In
this backdrop, the AGTA is not issuing reports on Sri Lankan sapphires
that show the features described. Rusiripala
said that these reports are like certificates confirming the authenticity
of a stone. "If Sri Lankan sapphires are not issued reports, buyers
would lose confidence and that could be a tremendous blow to the country's
gem industry, particularly its exports." The
authority, it is learned had contacted the AGTA and offered to assist
investigations into the treating techniques of gemstones and ascertain
whether an unusual phenomenon exists. The perturbed authorities have also
reportedly pointed out that the AGTA should not make public accusations
without hard evidence. Following
a letter from the authority inviting the AGTA to investigate the new heat
treatment method, two members of the Gemological Institute of America (GIA),
Christopher P. Smith and Mathew Hall recently visited Sri Lanka and have
reportedly attended experiments by the gemologist, P. Tennakoon, who
developed the new heating technique to enhance a particular geological
feature discovered in some of the Sri Lankan sapphires. The
accusations of unethical modification and culturing of gems are likely to
rest with the AGTA accepting the visiting researchers' report filed after
a detailed microscopic examination which declared the new technique blame
free and exculpated Sri Lanka from the allegation of producing synthetic
sapphires. Rusiripala
told The Sunday Leader that the negative publicity could have had a
drastic effect on the island's economy which enjoys a Rs.5 billion worth
export market. "It has been averted just in time." The
US is a major buyer of Sri Lankan sapphires and constitutes 40% of the
market.
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