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Search Results - Gemstones, June 2017

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Gemstones
Colour investigation: Opal

The quality of colour can be dissected into vibrancy, evenness, pattern and, in some cases, uniqueness; however, what on earth causes it? This series is dedicated to exploring the different causes of colour in gemstone minerals. STACEY LIM reports. Read more »
The GIA's new service traces a diamond's origin, and includes an app for consumers

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New GIA service traces diamond’s origin

The Gemological Institute of America (GIA) has introduced a program that allows retailers to track the origin of select polished diamonds, potentially providing a unique selling opportunity and improved consumer confidence. Read more »

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Tuesday, 26 March, 2019 06:49am
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