Two small, near-colourless stones reportedly from Myanmar (0.11 and 0.24 ct; figure 1) were recently loaned to GIA for examination for identification.
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This aquamarine's most striking feature was its unusually strong dichroism, displaying very deep blue and pale bluish green colours.
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The uncommon occurrence of epigenetic malachite, as found in this quartz, can result in vivid green colour.
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An unusually large faceted fuchsite, the chromian variety of muscovite, was identified and its green colour explained.
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At the AGTA and GJX shows, China Stone (Bangkok) marketed a selection of tiny, precisely cut natural gemstones.
Read MoreA simple test easily detected dye treatment in fire opal.
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