How to Make a Rock Out of Clay

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Use clay to mimic the colors of river pebbles.
Use clay to mimic the colors of river pebbles. (Image: Jupiterimages/Photos.com/Getty Images)

Polymer clay is a versatile substance that can be used to mimic a wide variety of material and rock is no exception. Creating fake rocks using stone is a great way to incorporate a natural and rough look into your crafts or into your own decorating. While working with stone requires carving, tumbling and polishing, making fake rocks from stones to use in your crafts is a simple process that results in a much lighter product.

Things You'll Need

  • Polymer clay
  • Play sand
  • Embossing powder (optional)

Work a piece of polymer clay between your fingers until it is soft and pliable. Use a color of polymer clay similar to that of the stone you wish to produce. Black, gray and reddish-brown are all good colors for rocks.

Flatten the piece in your hand until it is between 1/4- and 1/2-inch thick.

Sprinkle a pinch of play sand onto the surface of the polymer clay. If you want the rock to sparkle a little, as if it has quartz or mica inclusions, add a pinch of embossing powder to the clay as well.

Fold the piece of clay in half, trapping the sand inside.

Work the clay until the sand is distributed thoroughly throughout the clay. The sand gives texture to the rock.

Add more sand using steps 2 through 5 if you want a rockier texture.

Roll the clay into a rough, round shape.

Follow the package instructions when baking the polymer clay.

Tips & Warnings

  • For a translucent look, mix two parts of a solid color of polymer clay to one part of a translucent polymer clay before adding sand or embossing powder.

References

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