09-17-2008, 04:40 AM
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 | Super Moderator Senior Guide Member | | Join Date: Aug 2004 Location: Victoria Canada, and Los Angeles, CA
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Quote: |
Even gemmologists, i.e. experts in precious stones and pearls, cannot distinguish between pearls from Japan and China with the naked eye. However, Japanese pearls can fetch a price ten times that of Chinese pearls. Over the past two years, the two scientists from Mainz University have developed a method that makes it possible to clearly identify the origin of pearls.
| Full Article: http://www.physorg.com/news135317545.html |