"Sunflowers" by van Gogh can fade from-за unstable pigment
ARTinvestment.RU   06 июня 2018

The van Gogh Museum in Amsterdam has sounded the alarm: one of the yellow pigments in van Gogh's paintings of sunflowers may eventually become greenish-коричневым

By order of the van Gogh Museum was a thorough biennial survey of one of the paintings of Vincent van Gogh's sunflowers. Colorful surface shone macroscopic x-ray is a inch by inch (this process is called "chemical cartography"). The resolution of this phone is that you can see the direction of the crystals paint pigments, corresponding to the direction of the brush strokes.

Examined the pigments on the durability, and it turned out that van Gogh used two types of crowns yellow pigment (chrome yellow), one of which was less resistant to the environment. While the changes visible to the naked eye, the painting of 1889 did not happen. But it may happen in the future if you don't take what-то measures. "Sunflowers" can be in the literal sense of the word fade, become brown-зелеными. More of this sensitive pigment, having a more greenish-желтый than purely a yellow tinge on the petals and stems of sunflowers vangogovskie; bright-желтом the background of its almost not. In addition to one of the yellow pigments in the risk group also appeared to be emerald green (green by Guinier) and lead minium: they also may fade.

the staff of the van Gogh Museum try to take what-то comprehensive measures for the protection of its rich collection, consisting of 200 paintings and 400 drawings. Investigated only one painting by van Gogh, but it is known that the artist has widely used this vulnerable yellow pigment and other works, so, they, too, are under threat of fading. Even 5 years ago, the van Gogh Museum has reduced the illumination of their rooms, but this may not be enough to prevent changes.

the Most expensive to date, the work of Vincent van Gogh (one of those that was sold at auction) — "Portrait of Dr. Gachet," 1890, sold for 82.5 million with the Commission in the distant 1990-м year (16-е place in the ranking of global artists). Of the more recent sales — landscape "plow and the Plowman," which was sold in 2017 at Christie's for $81,3 million, as well as the "view of the home and the chapel Saint-Поль-де-Мусоль (Saint-Реми)", who retired from the auction may 15, 2018 for us $39.7 million

the Material was prepared by Maria Onuchina, AI

Sources: theguardian.com, artinvestment.ru