How to Paint Watercolor Agate Slices

Today, my sweet friend Alexis from Persia Lou is sharing How to Paint Watercolor Agate Slices.  Alexis is one of my very favorites and I love her creative eye.  She always is whipping up unique and colorful projects.  She also is a MASTER at watercolor!

How to Paint a Watercolor Agate Slice tutorial! Make your own art. Persia Lou for @Delineateyourdwelling
Hey there! I’m Alexis, the girl behind the blog Persia Lou, and I am so happy to be here today! I share crochet patterns, all kinds of crafts, and home decor ideas over on my blog, and today I’m sharing a project using one of my favorite mediums: watercolor!

Agate slices are so pretty, and watercolor is the perfect for capturing the color, translucency, and texture of these stones. These slices are easy to create and a lot of fun!

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Project Supplies:

watercolor agate slice supplies
Start off by getting some inspiration via google image search or some real agate slices if you are lucky. Then use the large mop brush (or large round brush) to paint the shape of the the slice on your paper with a light wash (add more water to create a lighter color).

Watercolor agate slice step 2

The trick to creating the pretty blended effect is to paint on a wet surface. Laying down this first wash and then painting on top of it quickly while it is still wet allows the colors to blend naturally.

Next, load your large round brush with a dark wash and paint around the outside of the shape you have created.

watercolor agate slice step 3
It’s so fun to watch the color spread and blend. Load your brush with more of the darker wash and mark out an oval shape in the center.

watercolor agate slice step 4
Try adding a few dots of a complimentary shade. Look at your agate slice images for inspiration on where to place color.

Next, sprinkle coarse salt on to the painting around the center oval shape.

watercolor agate slice step 5
Be sure to sprinkle the salt while the painting is still wet. The salt will absorb the color and leave little circles of litter color creating a great texture.

How to Paint a Watercolor Agate Slice tutorial! Make your own art. Persia Lou for @Delineateyourdwelling
Allow the painting to dry completely, and then wipe off the salt. Once the painting is completely dry, you can go back and add details using the small round brush and a very dark wash (only add a small amount of water to make a really dark wash).

watercolor agate slice detail
Painting on the dry paper will give you a different effect than you got before when painting on the wet wash. Your strokes will not blend as they did before, so you can get more defined lines now. Trace the edge of the slice and consider adding details to the center.

watercolor agate slice detail
These were so much fun to make, I made a whole bunch! Try playing around with different color combinations, placing the salt in different places, or adding layers of washes after the first wash has dried.

How to Paint a Watercolor Agate Slice tutorial! Make your own art. Persia Lou for @Delineateyourdwelling
I think the hardest part of watercolor is learning to let go of your need to control everything. The water will kind of flow and blend how it wants to. Try to go with it.

How to Paint a Watercolor Agate Slice tutorial! Make your own art. Persia Lou for @Delineateyourdwelling
The textures are just dreamy! I framed up a favorite and added it to my entry way, and I think it looks great there. I think these would also make a really pretty addition to a gallery wall.

How to Paint a Watercolor Agate Slice tutorial! Make your own art. Persia Lou for @Delineateyourdwelling
I would love if you came by and checked out some of my other projects at Persia Lou. Here are a few favorite projects to get you started:

persia lou projects

Simple Slouch Hat Pattern || Craft Room Tour || Gilded Watercolor Painting


Thanks so much for having me, Amy!


Well, is that not the coolest watercolor technique ever?  I think I’m definitely going to have to pull out my paint set and give this a try!  Thanks so much for stopping by, Alexis.  And don’t forget to follow Persia Lou for more wonderful ideas like this.



32 thoughts on “How to Paint Watercolor Agate Slices

    1. That’s a good question. I am not sure if the technique would work the same, but it’s worth a try!

    1. I know, Ashley! Super easy, I’ve got to give it a try!! I don’t know if the water and paint would work the same on canvas as it does on paper. Worth a try though!

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