News

A shipwreck hidden off an iconic Cape Town beach reveals the horrors of the slave trade
For more than 200 years, the São José Paquete d’Africa lay hidden off Cape Town’s shore. Its excavation in 2014 uncovered a ...
Gemological Institute of America4d
Geographic Origin Determination of Paraíba Tourmaline
ABSTRACT Vivid blue to green copper-bearing tourmalines, known as Paraíba tourmalines, are recovered from deposits in Brazil, Nigeria, and Mozambique. These tourmalines are sought after for their ...