Gemstone Guidebook Project
A project coordinated by GIA and the NGO Pact provides a valuable educational tool to women miners in Tanzania.
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.
Spring 2000 Gem News International
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewellery manufacturing techniques and industry trends.
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.
Large Namibian Demantoid Garnet
The Green Dragon mine yields exceptional demantoid, including a round brilliant seen at Tucson’s GJX show.
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.
An overview of the 2016 gem shows.
Purple Pyrope-Almandine Garnet From Mozambique
Analysis of attractive purple garnets from a new deposit in central Mozambique.
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.