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Tourmaline
Tourmalines have a variety of exciting colors with one of the widest color ranges of any gem.
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Summer 2009 G&G Lab Notes
Gem-Bearing Pegmatites: A Review
A survey of the current gemological knowledge of pegmatites, including the gem varieties aquamarine, tourmaline, and topaz.
Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of the Governador Valadares District
Importance of the Secondary Market for Fine Gems
Exceptional gems that are recirculated in the gem market make an impact at the Tucson shows.
Wheel of Light’s Mesmerizing Optics
Spring 2000 Gem News International
“Paraíba”-Type Copper-Bearing Tourmaline from Brazil, Nigeria, and Mozambique: Chemical Fingerprinting By LA-ICP-MS
Gem-quality bright blue to green “Paraíba”-type Cu-bearing tourmaline is now known from deposits in Africa (Nigeria and Mozambique), in addition to three commercial localities in Brazil (in Paraíba and Rio Grande do Norte States).
"Modern" Jewelry: Retro to Abstract
Solution-Generated Pink Color Surrounding Growth Tubes and Cracks in Blue to Blue-Green Copper-Bearing Tourmalines from Mozambique
Trapiche Tourmaline from Zambia
Well-formed crystals of green tourmaline from northwestern Zambia show a growth pattern reminiscent of trapiche emerald/ruby when sliced perpendicular to the c-axis.
Liddicoatite Tourmaline from Anjanabonoina, Madagascar
Copper-Bearing Tourmalines from New Deposits in Paraíba State, Brazil
Two new deposits of Cu-bearing tourmaline have been found in Paraíba State, Brazil, not far from the original source at Mina da Batalha.
