Kate was seen with this bracelet a couple of times.
Here is the closeup:
It’s a cuff bracelet made of tiny squares of metallic chrome silver, It looks like it’s joined as one by an attachment (see the left photo) but I am unsure. I suspect this is a stretch bracelet.
At this time I am unable to locate the other photo I’ve seen with this bracelet. If anyone finds it, please send it to me.