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Spiral structure in a Colombian emerald
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Research
30.10.2015
A Lalique quartz pendant in polarized light
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Research
04.05.2015
Beads cut from gastropod mollusc shell disguised in a coral necklace
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Micrographs, Research
01.09.2011
HIH: Multi-treated HPHT-grown synthetic diamonds showing some characteristics of natural diamonds
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Research
15.12.2008
Natural pearls of the Veneridae family
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About us
Services
Main services
Diamond services
Gem services
Pearl services
Exclusive services
Cleaning and sorting of chemically-unset melee diamonds
Cleaning & oiling of emeralds
Coral species identification
Cullinan report
Consulting
Products
News
Contact
en
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