Hi, I wonder if anyone could tell me whether they think this is vintage or a modern Topshop-style "vintage". I wasn't sure whether they made elasticated bracelets in the Fifties. Also I'm wondering is the material plastic or lucite? It is a really elegant shape with alternating bands of silver tone and diamante (I'm not very good on my terminology!). It feels quite nice and solid which is what makes me think it could be older. Thank you.