LivingSocial offers a $200 Blue Nile Credit
for $100. Coupon code "USA10" makes it $90
. Plus, all orders receive free shipping
. That's the best such offer we've seen for Blue Nile since Black Friday, when we saw a $200 credit for $75. Sale items are excluded. The promotional value of this voucher must be redeemed by May 13. Deal ends February 9.