Last night on BBC4 there was a great documentary about relics to tie in with the exhibition Treasures of Heaven that opens at the end of the month in the British Museum.
This 14th century reliquary holds a thorn supposedly from Christ's crown of thorns. (Actually, Bert has just said that I wasn't listening to the programme properly and he think's it contains slivers of bone, and the image below contains the thorn - which Sarah pointed out too. Oop! I am a distracted tv watcher...)
I can't remember what this one held, but it's so beautiful. I think I am going to have to go and see the exhibition, there are also lots of talks going on, one with Grayson Perry and Marina Warner which I don't think I can miss.