Enter the Blue Nile A Promise Of A Lifetime Sweepstakes and you could be the big winner. Grand prize is a trip to a Sandals Resort of your choice for three nights, a prepaid gift card for $1,000, and a $2,000 Blue Nile Gift Card. A $5,000 value. Open in US, and Canada. Must be 18 or older. Sweepstakes ends December 31, 2016. Enter one time per person. Good Luck!