gold – silver – platinum – copper – synthetic – it's all the same to me

Apart from the obvious appeal of jewellery as a creative expressive medium the fact that size wise it is very
convenient so does not require a van or lorry to transport – in fact a suitcase or rucksack is fine.
Which means the train a taxi or a sports car or motorbike can be used to get around.
what is avant‐garde jewellery anyway?