Inclusions of native copper and tenorite (CuO) were found in greyish-green elbaite from São José da Batalha, Paraíba, Brazil.
Read MoreA new source of red tourmaline is identified in Zambia.
Read MoreA report on Zambian emeralds with tourmaline inclusions.
Read MoreAn overview of the many types of gem-quality material, and its inclusions, currently found in Sri Lanka.
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Several transparent, faceted, blue to blue-green copper-bearing tourmalines containing growth tubes and cracks surrounded by sleeves of pink colour were examined for this report.
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