average cost of an engagement ring 2015
In 2015, the current average cost of an engagement ring is between $4,770 - $5,580. 1  The most popular engagement ring cut is the round brilliant diamond.2  The average womanâs ring size is about 6. 3  December is the most popular month for buying engagement rings. The average womanâs ring size is about 6. 2  December is the most popular month for buying engagement rings. 3  The idea that a man should spend 2 months salary for an engagement ring originated from De Beers marketing materials.