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How to examine gemstones with the loupe and tweezer
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05 Jan 2009
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How to buy colored stones
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26 Dec 2008
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Black diamonds
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08 Dec 2008
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Color patterns in opal
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01 Dec 2008
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Colorless Coatings And Impregnations
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24 Nov 2008
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Composite and assembled opal
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20 Nov 2008
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Treated And Synthetic Gemstones
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11 Aug 2008
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How to judge Coloured Diamonds
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02 Jul 2008
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AIGS Course Fee 2009 Announcement
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01 Jul 2008
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Colored Akoya Pearls
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15 May 2008
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Color-change Bastnasite-(Ce) from Pakistan
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03 Mar 2008
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Natural, untreated diamonds showing the A, B and C infrared absorptions (“ABC diamonds”), and the H2 absorption
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03 Mar 2008
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The ‘‘amber centres’’ and their relation to the brown colour in diamond
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03 Mar 2008
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Thermochromic and photochromic behaviour of “chameleon” diamonds
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03 Mar 2008
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AIGS Bangkok Inspects Exceptional Clinohumite from Tajikistan
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03 Mar 2008
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Hydrogen-Related Optical Centers in Natural Diamond: An Update
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03 Mar 2008
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Les Corindons a Changement De Couleur
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03 Mar 2008
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Étude Des Defauts Dans Les Diamants Bruns Et Les Diamants Riches En Hydrogene
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03 Mar 2008
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Natural, untreated diamonds showing the A, B and C infrared absorptions (“ABC diamonds”), and the H2 absorption
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28 Feb 2008
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The ‘‘amber centres’’ and their relation to the brown colour in diamond
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28 Feb 2008
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Thermochromic and photochromic behaviour of “chameleon” diamonds
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27 Feb 2008
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Presentation about the AIGS, GGL, ICA fieldtrip reports
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19 Feb 2008
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Pakistan: The Central Asian capital of the gemstone trade.
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18 Feb 2008
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