Millefiori – ferrofluid + water colors via Waxy.
The shapes, you see in these image are about the size of a thumbnail. They are created by mixing ferrofluid with water color and putting it into a magnetic field. Ferrofluid is a magnetic solution with a viscosity similar to motor oil. When put under a magnetic field, the iron particles in the solution start to rearrange, forming the black channels and separating the water colors from the ferrofluid. The result are these peculiar looking structures.
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