Field gemologist Vincent Pardieu travels to a Chanthaburi, Thailand sapphire mine and examines several rough samples.
View the full article at www.gia.edu/gia-news-research-...
Негізгі бет Vincent Pardieu: Mining for Sapphire in Chanthaburi
Field gemologist Vincent Pardieu travels to a Chanthaburi, Thailand sapphire mine and examines several rough samples.
View the full article at www.gia.edu/gia-news-research-...
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