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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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Winter 2010 Gem News International
Paraíba Tourmaline Melee: An Entry-Level Market Perspective
A New Method for Determining Gem Tourmaline Species by LA-ICP-MS
Presents a simplified but comprehensive classification of gem tourmaline species based on quantitative measurement of six common major elements.
New Tourmaline Pockets in San Diego County’s Pala District
Bicolor Double-Eye Tourmaline
Lepidolite in Copper-Bearing Tourmaline
Unique Moiré-Pattern Metallic Inclusion in Paraíba Tourmaline
Multi-Generation Cutting Family from Idar-Oberstein
The Elahera Gem Field in Central Sri Lanka
The Elahera gem field currently provides approximately 35% of the gemstones exported from Sri Lanka.
In Memoriam: Heitor Barbosa
