I'm not even sure what people wear these days, whether formal black is too formal or whether this never changes. (I know there's black and black - black chinos and jeans both looked too casual.)
Anyway, friend's DH has died, funeral coming up, and I'm planning on wearing a black suit jacket and smart black trousers, white linen top and black ankle boots. I do like a brooch and often wear one on jackets & coats. I have a black and silver marcasite one but it's quite big (2 inches long). I don't want to be 'look at me' but OTOH my outfit is hellish boring, although that's not the end of the world, and the brooch would lift it. I could wear a silver necklace instead. Friend is likely to be dressed quite formally. What do you think?