![linarite crystals from Cap - Garonne in France](https://www.patrickvoillot.com/wp-content/uploads/2021/03/linarite-cristaux-france.jpg)
blue
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![linarite crystals from Cap - Garonne in France](https://www.patrickvoillot.com/wp-content/uploads/2021/03/linarite-cristaux-france.jpg)
![lazurite crystal from Sar-e-Sang in Afghanistan](https://www.patrickvoillot.com/wp-content/uploads/2021/03/lazurite-cristaux-sar-e-sang-afghanistan135.png)
lazurite
Discovered in 1890, its name comes from the Persian “Lazhward” which means blue. This is the main component of lapis lazuli, that gives it its beautiful ultramarine blue color. Pure crushed lazurite gives the blue pigment used since antiquity. The Egyptians went to Afghanistan to
![green lazulite from Pakistan emerald cut](https://www.patrickvoillot.com/wp-content/uploads/2021/03/lazulite-taille-emeraude-pakistan139.png)
lazulite
Not to be confused with lazurite, the main constituent of lapis lazuli. Lazulite is also called Klaprothite, in honor of the German mineralogist Klaproth (1743-1817) who discovered titanium and uranium, and described this stone. The name fell into disuse but it would avoid confusion between
![carved lapis lazuli from Afghanistan](https://www.patrickvoillot.com/wp-content/uploads/2021/03/lapis-lazuli-afghanistan-intaille-chine140.png)
lapis lazuli
This is a rock of variable composition containing from 35 to 40% of lazurite (which gives it the beautiful blue color), sodalite, some nosean, some hauynite. Its name comes from the Arabic for “blue”. Azure blue color, greenish blue, dark purple, caused by sulfur, and
![blue jeremejevite from Erongo in Namibia](https://www.patrickvoillot.com/wp-content/uploads/2021/03/jeremejevite-ovale-erongo-namibie145.png)
jeremejevite
It honors the Russian mineralogist Pavel Vladimirovich Jeremejev (1830-1899) who has identified it in 1883 in Siberia.
![blue hemimorphite cabochon from D.R.Congo](https://www.patrickvoillot.com/wp-content/uploads/2021/03/hemimorphite-cabochon-congo160.png)
hemimorphite
Its name comes from the Greek “hemi,” half and “morpho” to form, due to the different shape of the tip of its doubly terminated crystals. It was identified by Kenngott in 1853. There is a “matrix” form blue and banded. As Tourmaline it presents the