The Mt. Mica area in southwestern Maine has been mined for tourmaline and other pegmatite gems since the 1820s.
Read MoreLiddicoatite, a calcium-rich lithium tourmaline, was recognised as a separate mineral species in 1977, and named in honour of Richard T. Liddicoat.
Read MoreUnusually vivid tourmalines from the state of Paraiba, in north-eastern Brazil, have attracted great interest since they first appeared on the international gem market in 1989.
Read MoreThe Elahera gem field currently provides approximately 35% of the gemstones exported from Sri Lanka.
Read MoreAn overview of the plentiful and various gem materials being discovered and produced in Afghanistan.
Read MoreA new source of red tourmaline is identified in Zambia.
Read MoreA survey of the current gemmological knowledge of pegmatites, including the gem varieties aquamarine, tourmaline and topaz.
Read MoreA report on Zambian emeralds with tourmaline inclusions.
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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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The authors used Vis-NIR spectral measurements combined with LA-ICP-MS data to investigate the usefulness of absorption spectra.
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