A Peruvian source yields a new azurite-malachite mixture.

Opal purportedly from a new deposit is found to be dyed.

An exhibit at the 2017 AGTA Tucson Gem Fair celebrates the work of Campbell Bridges.

A pearl, thought to be natural, is revealed to be a bead-cultured specimen with a pre-drilled nucleus.

Coating on a beryl demonstrates the importance of thorough examination of jewelry and gem materials.

Microscopic observation and trace element analysis is performed on rubies from Longido.