Queen Maxima of the Nederland’s made a stunning appearance at a diplomatic gala in Amsterdam. Looking good in a pink dress with an heirloom ruby and diamond tiara, necklace, and earrings to match. This ruby and diamond tiara is also beloved by Queen Maxima’s daughter, Princess Catherina-Amalia, who has also worn the stunning Ruby Peacock Tiara on other occasions. Look below for more fun pictures.