The Diamonds-USA.com free shipping offer is as impressive as the gems they sell, and comes on any order of any price shipped to any address. The luscious deal is available throughout the year and includes insurance, which other online diamond stores occasionally charge for. Although the Diamonds-USA.com free shipping offer doesn't require a code, they run a number of other deals throughout the year for further discounts. Check FreeShipping.org for updates on these promotions, most of which take a percentage off your total for using a particular credit card, like Visa or American Express.