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John Koivula, co-author of the Photoatlas of Inclusions
in Gemstones, has spent the last forty years studying and photographing the microworld of gemstones. His
photomicrographs can be seen on covers and as illustrations in numerous magazines and journals. He
has authored and co-authored more than 600 articles on gemstone inclusions, microscopy and related topics
for both professional and trade publications. |
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