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New Honorary Life Members

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AG Article: Women’s work in the gemstone supply chain: Africa, India and Thailand

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Figure 1. Hand specimen with one single and two twinned staurolite crystals in a fine white mica schist host rock from Keuvy, Russia. The presentation style of specimen is typical from this location. Photo courtesy of Craig Bosel.

Staurolite and its Role as an Ornamental

13 August, 2024

The Early History of Synthetic Diamond

13 August, 2024

Argyle Violet Diamonds

22 November, 2022
Quartz

A Photomicrographic Compilation of Inclusions in Quartzes

20 November, 2022
Figure 1. The Anastasia Diamond on loan for display at the Natural History Museum, London. The inclusions appear like glitter inside the stone. Photo courtesy of The Trustees of the Natural History Museum, London.

Black Diamonds and Carbonados: A Reflective Overview

02 June, 2022
Figure 2. Map showing the 255km diameter scar with the John Saul Ruby Mine, Penny Lane, Umba, Kalalani and Merelani gem deposits on its rim-zone. Unlabelled dots represent additional gem occurrences, most of which are hard rock (primary) occurrences although a few are alluvial. The more productive deposits are indicated by larger dots. Part of the rim-zone of the 1800km diameter scar is indicated by the pink band.

Gemstone Deposits of Eastern Kenya and Tanzania Controlled by Ancient Meteorite Impacts and Continental Collision – an Exploration Model

02 June, 2022

Gemstones and the Artist’s Palette – Natural Mineral Colouring of Paint Pigments

13 December, 2021

A Visit to the Indonesian Opal Fields in 2019 – Opal Types, Mining and Treatments Part 2

08 December, 2021

Some Encounters with Halite and Gypsum – Notes on their Crystallography and Gemmology

18 June, 2021