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MOST RECENT ISSUE

JULY – DECEMBER 2021 VOLUME 27 NUMBER 6

In This Issue

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

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

Gemmological Spectrum

Divisional News

From the Archives

Book Reviews

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