Porcelain or China flower brooch pin

A very pretty brooch given to me by my Aunt. It belonged to my Grandmother which she received it from her mother. There were two of these each different. This one and then another that was given to my Grandmother's sister. The back of this pin reads exactly in caps COALPORT CHINA MADE IN ENGLAND It is definitely a delicate piece just by looking at it, not plastic or resin. Would love to get some history on this piece to share with my Aunt.