MISASHA fashion jewelry women's camellia flower pin brooch with organza gift bag

what is the size?

What are the dimensions in inches? someone said it is 4.5 cm or 1.7 inches. it looks bigger in the pictures. can someone clarify this? thanks!

What are the dimensions of pin?

What is the material? Satin, silk, plastic? I need 6 of these ones x my wedding.