Update on the Green Dragon Demantoid Mine in Namibia
Appendix 2: Comparison of LA-ICP-MS and EPMA Data, Part 2
Appendix 3: Calculation Method for Tourmaline Species Classification Used Here
Appendix 4: Guideline for Simplified Distribution of Site Occupancy for LA-ICP-MS Data
Appendix 5: Simplified Tourmaline Species Classification for LA-ICP-MS Data
Apatite Cluster in Orthoclase Feldspar
An apatite crystal cluster, notable for its morphology and size, is found in a feldspar specimen.
Infrared Spectroscopic Study of Filled Moonstone
A study on how infrared spectroscopy provides conclusive evidence of impregnated moonstone.
Tairus Hydrothermal Synthetic Sapphires Doped with Nickel and Chromium
Green Jadeite-Omphacite from Guatemala
Large “Rainbow Calcite”
New Deposit of Pezzottaite from Madagascar
A highly saturated purplish pink to red pezzottaite from a new deposit in Madagascar is encountered in Tucson and tested by GIA researchers.
New Fluorite Deposit in Nigeria
New Nigerian Green Beryl Find
William Ruser: The Jeweler Who Charmed Hollywood
Large CVD-Grown Diamond Resubmitted after HPHT Treatment
Electroformed Gold Bracelet
Examination of gold bracelet bearing a 14K hallmark reveals a wax or resin material under gold plating.
Exceptionally Rare Titanoholtite
Iridescent Imitation Pearl
Pink and Red Epidote in Quartz
Quarterly Crystal: Diamond in Diamond
Examination of a South African diamond reveals an eye-visible diamond inclusion.
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