[:en]Why diamond ring is used in proposal?
Diamond ring has appeared in European middle age. In 1477 AD, the Roman Emperor Maximilian I, fell in love with Marie, the princess of France. At that time, Maximilian I had a well-known huge circular diamond. It is said that this huge circular diamond is very stiff, very hard, it represented the royal eternal brave and[:zh] 為什麼求婚時會用鑽戒？
鑽戒早在歐洲中世紀已經出現，在公元1477年時，羅馬帝國皇帝馬克西米利安一世，愛 上了法國的瑪麗公主，當時馬克西米利安一世家傳了一粒圓形巨鑽，據說因為這顆圓型巨鑽非常堅硬，代表著皇族永恆不息的勇敢和堅定。為表真誠，馬克西米利安 一世將這顆巨鑽打造在指環上送給公主求[:]