Follow Dr. Peretti's footsteps to the sapphire mines of Madagascar (Ilakaka) during a GRS field expedition in 2007.
Негізгі бет GRS Gemresearch Documentary: Sapphire Mining in Madagascar (2008)
Follow Dr. Peretti's footsteps to the sapphire mines of Madagascar (Ilakaka) during a GRS field expedition in 2007.
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