On the Back Side On the Bottom of the Round Stone. Also the Pin seems to have had something at the Bottom & was either removed or broken off.
Also I've Attached the Additional Pictures. The Tip of the Middle Stone is Not as Pointed as the Rest. The Width of the Pin Measures 1 1/4.The item "Vintage Saphiret Rhinestone Fan Brooch Pin Antique" is in sale since Thursday, April 11, 2019. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Costume\Retro, Vintage 1930s-1980s\Pins, Brooches". The seller is "thimblesandy" and is located in Hampton, Iowa.
This item can be shipped to United States.