Without jewelry, pearls would be nothing but oyster gallstones and treasure chests would contain nothing but dirty back issues of The Economist. Embrace the power of bling with today's Groupon: for $20, you get $50 worth of online jewelry purchases at Ice.com. Standard shipping is included for free through December 21, allowing Groupon purchasers to arrange for timely Christmas deliveries.

Ice.com's online warehouse is stocked with a huge selection of high-quality rings, bracelets, necklaces, watches, earrings, and pendants from around the world. Customers can easily breeze through the shop's extensive selection of decoratives, opting to search by metal, price, stone, or category. Today's deal is fitting for jewelry under $100, such as a sterling silver heart pendant that features one carat's worth of rubies and a set of fully operational ventricles ($95) or a triple-strand pearl bracelet strung with freshwater clam chaws ($75).