Zales is having a 30% off everything sale, and if you sign up for their emails, they'll give you another $50 off coupon on purchases $300 or more. 30% off sale ends December 17.
1/4 CT. T.W. Princess-Cut Diamond Bypass Engagement Ring in 14K Gold was originally $779, but is now on sale for $545.30 before taxes. Use that $50 coupon off $300 or more to get the $495.30 price tag, and you'll also have free shipping since you spent over $49.