Heirs, answer

[Тютчев]

Сообщение от Konstantin

One of the few contemporary artists, who sell on the secondary market

For the credibility of the sales must be at least 10 times more stones and diamonds. It's a modern (now living) artist! He is full of strength and energy, and according to this, if there's serious demand sales should be considerably greater.
 
Yes, even if they were, I still would not recommend to invest in his work. There is much more interesting contemporary artists!