Vintage silver & marcasite brooch in a butterfly design with a gorgeous green stone at the centre

In good condition, with a rollover clasp

I'm sure this is silver although I can't find an actual hallmark - tarnish comes off with a silver polishing cloth

Weight is 11.2g

Will post or can be collected from London SE9

I have had a big clearout on my jewellery so please do take a look at my other listings as well.