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| Member since: 22 Sep, 2018 |
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| Website: http://www.gemscience.net/g... |
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| Location: usa |
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About me:
GSI diamond screening for synthetics- Gemological
Science International (GSI) is an independent
commercial gemological laboratory. We combine
state-of-the-art technology with deep professional
expertise. GSI diamond testing experts quickly and
accurately do screening for synthetic diamonds
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