gemology certification

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1 - 3 Results for gemology certification from 3 Products

Carbon Grown Round Brilliant Cut Certified Diamonds for Jewelry

... reputable laboratories in the world, the International Institute (IGI) and the Institute of America (GIA). Thi...

Time : Jan,09,2026

Henan Yuda Crystal Co.,Ltd

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... from the International Institute (IGI). The world's largest independent laboratory for testing and grading gemstones an...

Time : Aug,26,2025

Shenzhen ZKZ Jewelry Co., Ltd.

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