Tourmaline
Tourmalines have a wide variety of exciting colors with one of the widest color ranges of any gem.
![](https://www.gia.edu/img/icons/loader-large.gif)
![Heitor Barbosa discovered Paraíba tourmaline in 1989 after almost a decade of mining. Photo by Duncan Pay. Heitor Barbosa discovered Paraíba tourmaline in 1989 after almost a decade of mining. Photo by Duncan Pay.](https://www.gia.edu/images/WN23-GNI-Fig32-314952-300px.jpg)
The life of the discoverer of Paraíba tourmaline is remembered.
Read More![Figure 1. A 2.52 ct oval modified brilliant Paraíba tourmaline. Photo by Adriana Gudino. Figure 1. A 2.52 ct oval modified brilliant Paraíba tourmaline. Photo by Adriana Gudino.](https://www.gia.edu/images/SU23-MW-Fig16-311924-300px.jpg)
Microscopic observation unveils the first known instance of skeletal metallic inclusions in Brazilian Paraíba tourmaline.
Read More![Figure 1. A 16.96 ct emerald-cut green tourmaline from rough found near a new pocket at the Tourmaline King mine. Photo by Robert Weldon; courtesy of Pala International. Figure 1. A 16.96 ct emerald-cut green tourmaline from rough found near a new pocket at the Tourmaline King mine. Photo by Robert Weldon; courtesy of Pala International.](https://www.gia.edu/images/SP23-GNI_TR-Fig31-288718-300px.jpg)
Bill and Carl Larson share details about new tourmaline pocket discoveries at the Tourmaline King mine.
Read More![The copper inclusions produce a golden chatoyancy. The copper inclusions produce a golden chatoyancy.](https://www.gia.edu/images/FA22-LN-Fig22-278160-300px.jpg)
The Tokyo laboratory examines a Paraíba tourmaline with chatoyancy caused by copper inclusions.
Read More![This 1.21 ct diamond exhibits a natural red color. This 1.21 ct diamond exhibits a natural red color.](https://www.gia.edu/images/FA22-LN-Fig1-278154-300px.jpg)
An extremely rare natural-color red diamond is submitted to the Carlsbad laboratory.
Read More![Diopside crystals take the shape of an exclamation point in tourmaline. Diopside crystals take the shape of an exclamation point in tourmaline.](https://www.gia.edu/images/FA22-MW-Fig2-278148-300px.jpg)
Diopside crystals observed in elbaite tourmaline resemble an exclamation point.
Read More![This Paraíba tourmaline contains a set of stellate zircon needles. This Paraíba tourmaline contains a set of stellate zircon needles.](https://www.gia.edu/images/FA22-MW-Fig7-278145-300px.jpg)
Fiber-optic light reveals a remarkable set of stellate inclusions in blue-green Paraíba tourmaline.
Read More![Dislocation pattern in this heat-treated blue sapphire resembles smoke rings. Dislocation pattern in this heat-treated blue sapphire resembles smoke rings.](https://www.gia.edu/images/FA22-MW-Fig6-278147-300px.jpg)
A rare look at a smoke ring pattern identified in sapphire without the presence of beryllium.
Read More![Review of Pegmatites and Their Gem Minerals, by Michael Menzies and Jeffrey Scovil. Review of Pegmatites and Their Gem Minerals, by Michael Menzies and Jeffrey Scovil.](https://www.gia.edu/images/Book-Review-Shigley-Pegmatites-300x169.jpg)
Review of Pegmatites and Their Gem Minerals by Michael Menzies and Jeffrey Scovil.
Read More![Twelve jewelry designers from all over the U.S. will use these 12 stones in one-of-a-kind jewelry pieces. Twelve jewelry designers from all over the U.S. will use these 12 stones in one-of-a-kind jewelry pieces.](https://www.gia.edu/images/SU22-GNI-Fig38-275933-300px.jpg)
The historic discovery of a Maine tourmaline source is celebrated through jewelry designs featuring gems unearthed 50 years ago.
Read More