Blue Nile cuts 40% off a selection of jewelry via coupon code "SECRETSALE" during its Secret Sale. Plus, all orders receive free shipping. That's better than last week's mention of 20% off fine jewelry and is the strongest percent-off coupon we've seen at Blue Nile. Deal ends November 25. A couple of best bets:

• Knot Stud Earrings in Yellow Gold Vermeil for $30 (pictured, $20 off)
• Silky Knot Necklace in Sterling Silver for $51 ($34 off)

See all Blue Nile Coupons.