Van Gogh apparently mixed it with blues to create purple for Irises. But geranium lake is highly sensitive to light. “That’s why, currently, the irises appear blue, because that red component ...

Two Van Gogh paintings that provide unique insight into his life after he cut off his ear have gone on display in London.

Down the road, a field of heavy-headed sunflowers dazzled yellow under a blue sky. Morell had come to Arles to take photographs in the places Vincent van Gogh painted 130 years ago. But ...