The listing, ROSES ARE RED VIOLETS ARE BLUE.... (VINTAGE) has ended.
I don't know what this vintage brooch is made from. How about you? Seriously though it looks a lot like Hematite but I don't know it it can be worked into shapes like this. Whatever it is made from it has a pretty, mirror like finish especially when it hasn't had my grubby hands all over it trying to capture the perfect pic! It is in like-new condition and shows no obvious signs of wear. Bid now and avoid future regret! ;)