The most expensive color in the world, the history of more precious pigment Ultramarine than gold - GIGAZINE
Lapis Lazuli: Source of the Priciest Pigment on the Planet - Vision Times
Painting using a pigment 'Ultramarine' made from jewels called 'expensive than gold' - GIGAZINE
The History of the Color Blue: From Ancient Egypt to New Discoveries
The Cure For Greed treating greed with an ink syringe set of ink and pure gold made from 50 dollar bills for 800,000 yen - GIGAZINE
How was the new blue YInMn Blue for the first time in 200 years born from the laboratory? And can you find a new red? - GIGAZINE
Red which grabbed the hearts of the European people during the Renaissance period was made by grinding small insects - GIGAZINE
How to make pigment Ultramarine which is said to be more precious than gold - GIGAZINE
History of color that caused people to die - GIGAZINE
The mystery of another portrait hidden in Picasso's masterpiece - GIGAZINE
Blue….It Used The Be The Most Expensive Color on the Planet
Blue Is the Warmest (and Costliest) Color — The Conservation Center
How are artists accepting the new blue 'YInMn Blue' that was discovered for the first time in 200 years? - GIGAZINE
Bluetooth' is discovered from women's bones 1000 years ago - GIGAZINE