I have some from when I made some stamping projects. It's a fine sand-like powder that comes in a bunch-o-colors & finishes. You stamp your image, then while it's wet, dump some embossing powder on the the ink. Tap off the excess (like using glitter) and then with a heat gun (iron, toaster oven, etc) you run it over the powder and it melts, wa-lah, embossed. They have special inks and pens that are just sticky, no color (well a tinge of color so you can see) to use with them too.