In episode 10 of Gemology Worldwide, Josh and Lauryn discuss tourmaline, breaking down the mineral group by color. Then they interview Brian Cook, who has an incredible first hand account of the Paraiba tourmaline discovery.
In episode 10 of Gemology Worldwide, Josh and Lauryn discuss tourmaline, breaking down the mineral group by color. Then they interview Brian Cook, who has an incredible first hand account of the Paraiba tourmaline discovery.