A company plans to turn some of Beethoven's hair into diamonds. According to the news reports, between 6 to 10 strands will be used to make three diamonds that will then be auctioned off. Details here.
I suppose it was inevitable. Beethoven's hair has had quite a remarkable history, as far as that sort of thing goes. Starting with a student cutting a lock of it from his corprse to , more recently, to scientific examination of it to determine illnesses and cause of death.
You can read more here about the Master's hair here (no pun intended). And there's even a film about Beethoven's hair that might interest you.
Sadly, there will be no diamonds for Sibelius fans. Just the music. Please.