Give out the bling at your next party with this $8.95 ice tray that lets you fill up your glasses with 10-carat diamonds. Just pour water into these trays and the cubes come out looking like multi-faceted gems.
Add a little green food coloring as you see in the picture here, and presto! Instant emeralds. Well, not exactly instant, but you can make them a lot quicker than the natural way.