Does it have to be precious?

Here is a ring made today from a disposable plastic fork.  Obviously in forming it I have broken off a couple of the tines of the fork and made the whole thing quite weak in places and liable to crack...... not really wearable.  Is it jewellery?

What is jewellery?

I am in the process of trying to put some ideas together for a jewellery exhibition at Whitby Museum and find myself asking 'what is jewellery?'