Discovery of Colour-Change Chrome Grossular Garnets from Ethiopia
The first known group of colour-change gem-quality chrome grossular garnet, reportedly from Ethiopia, is examined in GIA’s Carlsbad lab.
Gemstone Guidebook Project
A project coordinated by GIA and the NGO Pact provides a valuable educational tool to women miners in Tanzania.
Magnesio-Axinite from Merelani, Tanzania
A rare find from a limited occurrence in Tanzania’s Merelani Hills, along with a “Merelani mint” garnet, is seen in Tucson.
Pyrope-Spessartine Colour-Change Garnet with a High Grossular Component
A colour change in rough garnet is observed and plotted in GIA’s Carlsbad lab.
Purple Pyrope-Almandine Garnet From Mozambique
Analysis of attractive purple garnets from a new deposit in central Mozambique.
Update on the Scorpion Tsavorite Mine
A look at the resumed operations and new production of Kenya’s Scorpion tsavorite mine.
An overview of the 2016 gem shows.
Mexican Demantoid from New Deposits
Skarn deposits in the Veracruz state of Mexico yield new demantoid material.
Green Nephrite Jade Attracts Buyers in Tucson
An update on the nephrite jade market from the 2015 GJX show.
Large Namibian Demantoid Garnet
The Green Dragon mine yields exceptional demantoid, including a round brilliant seen at Tucson’s GJX show.