Any jewellery exhibitions going on in New York?

[blue_diamonds]

I know that about a summer ago Van Cleef and Arpels had an exhibition on the Upper East Side, which was grand. At times the Museum of Natural History had a collection of colored diamonds. Right now the Queen is in her 2nd Jubilee, with the Windsor crowns going on tour.
So, does anyone know of any jewellery/jewellery related exhibitions happening in New York? Thanks.