Thinking of popping the question this holiday season? There's still time to order the perfect diamond ring if you hurry, plus you'll be able to save on just about everything at Blue Nile . Diamond jewelry and diamond earrings are now 15% off and pearl and gemstone jewelry is 25% off via coupon code TIMELESS. Combined with freeFedEx Priority Overnight Shipping on every order, and that makes for an offer that's impossible to pass up. Sale and free shipping offer end on 12/22/2012.