Text written in Basque and translated automatically by Elia without any subsequent editing. SEE ORIGINAL
Ferrokarrilla del Norte - The History of the Blue Beyond the Sea
The most expensive pigment in the world was ultramarine blue, commonly called ultramarine. In the past, one kilogram of gold was required to pay for one kilogram, because it was made from lapis lazuli ore, and lapis lazuli had to be brought from Afghan soil. But the chemistry of the 19th century changed that.
Buletina
Bidali zure helbide elektronikoa eta jaso asteroko buletina zure sarrera-ontzian