3D Magnetic pigments have strong magnetic characteristics that when a magnet is held over it before the hard layer is set can be manipulated into any design. There are magnets sold that allow you to do intricate designs quickly while the top layer is still hardening. Mainly used by nail technicians it is something that I would love to see an ambitious tumbler maker make a go of it. The hurdle will be in how & when to hold a magnet over the cup to draw up the magnetic pigmentation to form the design. I feel once done this technique will be another coveted my many a crafter. I am trying to find a bulk seller to buy from to keep costs low and availability to you quick.
These pigment powders can be used in epoxy, with acrylic powders in many applications - nails, crafts, make-up, the possibilities are endless.
Actual colors may vary. This is due to the fact that every computer monitor or screen has a different capability to display colors. We try to edit our photos to show the pigments as life-like as possible, but please understand the actual color may vary slightly from your screen.