Rare Vtg Brooch Pin and Necklace Pendant, Gold Black Pink Flowers

I wish I had some information on this beautiful piece. It doubles as a brooch / pin, and also has a hole at the top back of the piece to be able to loop into a necklace. I don’t know what this is made out of or if it’s hand made. It certainly is a one of a kind piece, because I cannot find it as an image search anywhere. Please lmk if you do! This piece was my grandmother’s. I’m guessing it may date anywhere from the 1930s to 1960s? I honestly have no idea. I unfortunately never saw her wear it but I always admired it. Unfortunately because of the shine on the black, I am unable to get any good photos without my shadow in the way. This piece is in incredible shape for however old it is. The pin clasp is solid - works perfectly. It’s one of those spin around and lock pins. The loop for the necklace is in the back of the brooch and is solidly built.