Szul knocks up to 89% off select May Emerald Jewelry items during its May Emerald Birthstone Sale. (Although the banner says up to 85% off, we found items with bigger discounts.) With prices starting at $27 and free shipping on all orders, it's among the best percent off discounts we've seen from Szul in recent months (We saw Up to 91% off jewelry with deals from $14 three weeks ago, since expired.) Choose from emerald rings (pictured), pendants, earrings, and more. Deal ends May 18.