Mother Of The Groom Silver Pin Wedding Bridal Party Gift Decoration Mother Of Groom Pin. Let Mom stand out on your special day with this "Mother of Groom" pin. Designed in an elegant font, this pin is sure to let Mom feel even more special on your wedding day. After the wedding, this 2" long metal pin is sure to still be looked upon with smiles as a special accessory to her scrapbook or as a special memento she can see every time she opens her jewelry box. 2"