Gubelin Gem Lab Newsletter
#10
Tuesday, February 7, 2006
Headlines:
Study
on
“Paraiba”-like tourmalines from
Mozambique is completed
After the appearance of Copper-Manganese tourmalines from Mozambique
which look similar to the famous Paraiba tourmalines from Brazil,
several gemmological laboratories began studying this new material. The
Gubelin Gem Lab is now in the position to positively identify this
material and to clearly distinguish it from tourmalines from Brazil and
Nigeria. This is done mainly on the basis of the analysis of trace
element chemistry. Gubelin gemmologists are co-operating with the GAAJ
- Zenhokyo Lab in Tokyo and are participating in a research publication
on this topic.
Gubelin
Gem Lab
conducts Off-Premise-Testings in HongKong
(March) and at BaselWorld (April)
For the first time, an Off-Premise-Testing week will be held during the
March Jewellery exhibition in Hong Kong. From March 5-11, the
Gubelin mobile lab will be located on the 30th floor of the Grand Hyatt
Hotel, Harbour Road 1, next to the Hong Kong Convention and Exhibition
Center where the Jewellery exhibition is taking place.
As every year, the Gubelin Gem Lab will have a booth during the
BaselWorld show in early April, Hall 3.1., booth number N09, as last
year. For the first time, diamonds may be given for on-site
determination of diamond type.
LMHC agrees on standardised wording for Padparadscha sapphires
The Lab Manual Harmonisation Committee (LMHC) has presented its new
standardised wording for padparadscha sapphires. The seven most
influential gemmological laboratories have agreed on a uniform wording
on their reports, a further achievement to ease the understanding of
gemmological reports on coloured stones. Simultaneously, LMHC
Information Sheet #4 has been published.
Low mining production
in Burma due to high fuel prices
Prices for fuel and diesel in Burma (Myanmar) have risen approximately
700% in recent years. This has forced many miners to leave their mines
flooded and halt mining activities. In addition, the heavy rainfalls
over the last months have further worsened the situation in the mines.
The sales at the last auction in Yangon in January were accordingly
modest.
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