Make Easy Galaxy Painted Rocks (without Painting!)

These galaxy painted rocks are so easy but the result so stunning, I have no doubt that you’re going to love the outcome. They’re just out of this world!

how to make galaxy painted rocks
Check out how easy making these galaxy painted rocks is–with no painting involved!

Galaxy Painted Rocks (without Painting!)

Here at Ruffles and Rain Boots, we started painting rocks so long ago, I don’t remember what inspired us exactly, but I know that we’ve always enjoyed participating in the kindness rocks project. And I also know that one of the most frustrating things about learning how to paint rocks was finding and buying rocks that make a great canvas for our rock crafts. So, I hunted up a way to make our own rocks–and when I realized I could mix paint colors to make DIY rocks?! Galaxy rocks were the next inevitable step. And. They. Are. Awesome.


There is no way that you can recreate this fun blending of shades with paint. And pink, purple, blue and black are just a few of the colors you could mix together, but it’s exactly what I wanted. If you’re ready to stop wandering around to find rocks and get your milkyway rocks ready, let’s get started.

No Time to Make This Now? Pin it for Later

You’re busy, I get it. Pin this to your favorite kindness rock inspiration board on Pinterest and it’ll be here for when you’re ready.

side view of black pink blue and purple rocks on a white table with text which reads make galaxy rocks without painting

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Tips to Make Milky Way Painted Rocks

  • These stained rocks are really very simple. Two ingredients, if you don’t count the different colors of the paint used to stain the concrete. Seriously, just some quick set portland cement from the home improvement store and a handy rock mold.
  • These galaxy rocks are perfect as a backdrop for so many other great ideas. Can you imagine all the fun crafting that can be done with these?! But the thing is, you’ll want to do your rock art of other designs on top of the galaxy stain before you seal the rocks with mod podge or lacquer.
  • What can you use to paint on top of these stained rocks? Anything. Acrylic paint, oil paints, paint markers, paint pens, patio paint, whatever. They work just like a real river rock.
  • The mold makes smooth rocks on the facing side, but if you want the back to be smooth, you’ll want to sand it down. And yes, you can sand these rocks. After you sand them, you’ll want to wash the rocks, but don’t worry about doing that if you’re not sanding them.
how to make rocks that look like the galaxy

How Do I Make this Galaxy Painted Rock?

I’m so glad you asked. Below is our written tutorial.

Yield: 8

Galaxy Painted Rocks without Painting

how to make rocks that look like the galaxy

How cool are these galaxy painted rocks without painting! They're so simple, but you get this really cool rock and I never picked up a paint brush!

Prep Time 5 minutes
Active Time 10 minutes
Additional Time 1 day
Total Time 1 day 15 minutes
Difficulty Easy
Estimated Cost $5



  • Rock Mold
  • 4 Disposable Cups
  • 4 Disposable Spoons or Sticks
  • Disposable Butter Knife


  1. Sprinkle the glitter in the mold, just a little in each cavity.
  2. Place 2 cups of cement in each cup.
  3. Place 1 cups of each color in a single cup. I used the Unicorn Spit brand paint for the purple and teal. For the black, I used black tempura paint and for the pink, I combined red and white tempura paints.
  4. Stir each cup separately, until the color is consistent. The cement should be the consistency of pancake batter--if it is not, add more paint. It will be a lot thinner than you think it should be. But just keep going.
  5. Scoop the teal, pink and purple colored concrete into the cup with the black and fold them together--do not stir, fold. You want the colors to be separate, but together.
  6. Place 1 cup of concrete into each mold cavity.
  7. Jiggle the mold a bit to knock out any air pockets.
  8. Using the butter knife, flatten the top of each mold and wipe away any excess concrete.
  9. Allow to sit overnight to set.
  10. Pop out of mold.
  11. You are NOT going to like how muted the colors are and you're going to be sad they look so dim. Don't fret.
  12. If you want to paint something on the rocks, this is the time to do so.
  13. Coat the rock with lacquer and allow to dry. Watch those colors pop!
  14. Enjoy! photo collage tutorial of how to make galaxy painted rocks without painting


For more fun rock painting ideas, visit

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photo collage of milkyway painted rocks with text which reads galaxy rocks without painting

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