Short answer
The essentials: smooth river rocks (1.5 to 3 inches), acrylic craft paint and a flat brush for base coats, water-based paint pens in a medium 1.8 to 2.5 mm and an extra fine 0.7 mm tip, a white and a black, scrap paper for priming, and a clear spray sealer. Add dotting tools, outdoor paint and stencils later.
Supplies needed for rock painting: the essentials
The core rock painting supply list
| Supply | What to look for | What it is for |
|---|---|---|
| Rocks | Flat, smooth river rocks, about 1.5 to 3 inches | The canvas; smooth stone takes clean lines |
| Acrylic craft paint | A small set including white and black | Base coats and large areas |
| Flat brush | About half an inch wide | Even base coats |
| Medium paint pens | 1.8 to 2.5 mm, water-based, about 8 colors | Filling shapes and bold lines |
| Extra fine paint pens | 0.7 mm, including black and white | Eyes, dots, outlines, lettering |
| Scrap paper | Any | Priming pens and testing colors |
| Clear spray sealer | Clear acrylic aerosol | Protecting finished rocks |
The Kindness Rocks Project’s method follows the same order: smooth river rocks, a base coat of non-toxic paint, paint pens for the art, then a clear top coat. It suggests 1.5 to 3 inch stones and says craft stores, garden centers and landscape suppliers usually sell them (project guidelines).
Rocks: where to get them and what to avoid
- Smooth beats pretty. A plain, smooth stone paints better than an interesting rough one.
- Flat or gently domed so the rock sits still while you work.
- Buy or collect legally. Bagged river rocks are sold online and in craft and garden stores. Collecting is restricted in many parks.
- Avoid crumbly or chalky stones: paint flakes off with the surface.
Paint and paint pens
Brushed acrylic craft paint is cheap and covers fast, so use it for base coats. Paint pens are cleaner and more precise, so use them for the design. In Sarah Renae Clark’s comparison, pump-action water-based markers such as Posca held up best on rock, while most direct-ink markers soaked into the stone. The full marker buying guide is paint pens for rock painting, and paint brands are compared in acrylic paint for rock painting.
Rock painting tools worth adding
| Tool | Use | Need it? |
|---|---|---|
| Dotting tools | Round dots in graded sizes for mandalas | Only for dot work |
| Detail brushes | Fine lines with bottled paint | Optional if you use paint pens |
| Pencil or chalk pencil | Sketching designs and lettering | Yes, cheap and useful |
| Stencils and transfers | Repeatable shapes and letters | Handy for kids and signs |
| Palette or paper plate | Holding paint puddles | Yes if you use bottled paint |
| Outdoor acrylic paint | Base coats for garden rocks | For rocks that live outside |
| Cotton swabs and water | Fixing mistakes while wet | Yes |
Rock painting supplies for adults
Adults usually outgrow kit paint fast. The upgrades that matter most: a pump-action marker set with replaceable or reversible tips, a set of extra fine tips for detail, a strong opaque white, graded dotting tools if you like mandalas, and a better sealer. Kits for kids and adults are compared on rock painting kits.
Sealers: which one when
| Sealer | Best for | How to use |
|---|---|---|
| Clear acrylic spray | Most rocks, indoor and outdoor | Two or three light coats outdoors |
| Water-based aerosol varnish | Water-based marker work | Posca’s recommendation for outdoor work |
| Brush-on outdoor finish | Extra coats on garden rocks | Only after a spray coat has locked the marker paint |
Posca says its markers suit outdoor use and recommends fixing outdoor work with a water-based aerosol varnish (Posca FAQ). Details and drying times are in how to seal acrylic marker art.
Kits versus buying separately
A boxed kit is convenient for a gift or a single afternoon. Hobby Lobby’s listing for one popular kit, for example, includes 10 river rocks and 8 paint pots of 0.17 fl oz each (Hobby Lobby listing). If you will paint more than once, separate supplies give far more stones and paint for the money.
Rock painting books and design ideas
Library craft sections and kindness rock groups are good places for design inspiration, and our own sketches with step lists are free: start with easy rock painting ideas, then browse every theme on the rock painting ideas hub. The painted rocks beginner guide covers etiquette and hiding rocks.
Rock painting supplies on Amazon
The core list, each listing checked by hand.
-
Simetufy river rocks for painting, 25 pieces
Flat, smooth 2 to 3 inch stones per the listing, the size most designs suit.
- 25 stones
- 2 to 3 inch
-
Apple Barrel acrylic craft paint set, 18 colors
Inexpensive acrylic craft paint for base coats.
- 18 matte colors
- 2 fl oz each, per the listing
-
Posca PC-5M paint markers, 8 count
Medium tips for the design. Posca scored highest overall among pump-action markers in Sarah Renae Clark’s comparison.
- Medium reversible tip
- 8 colors
-
Posca PC-1M paint markers, 8 pack
Extra fine 0.7 mm tips for faces, dots and lettering.
- 0.7 mm extra fine
- 8 colors
-
Krylon Crystal Clear acrylic coating spray
A clear acrylic spray; the Kindness Rocks Project names Krylon clear acrylic spray as a quick top coat.
- Aerosol, 6 oz
- Clear finish
-
FolkArt outdoor gloss acrylic craft paint set
Outdoor acrylic for base coats on garden rocks.
- Outdoor acrylic
- Gloss finish
Each pick links to an Amazon listing we checked by hand. Prices, colors and pack sizes change on Amazon, so check the listing before you buy. As an Amazon Associate we earn from qualifying purchases.
Questions people ask
What do I seal my painted rocks with?
A clear acrylic spray sealer is the usual choice: two or three light coats, sprayed outdoors or in a ventilated room once the paint is fully dry. The Kindness Rocks Project names Krylon clear acrylic spray as a quick option. Posca recommends a water-based aerosol varnish for outdoor work. Spray the first coat, since a brush can drag marker paint.
Do I need to prime rocks before painting?
Not with a special primer. Clean, dry, smooth stone takes acrylic well. A base coat of acrylic craft paint does the job a primer would: it evens the surface, hides dark stone and makes paint pen colors brighter. Very porous or crumbly stones soak up paint, so give them an extra base coat or choose smoother rocks.
What is the best way to paint rocks for beginners?
Pick a smooth palm-size stone, wash and dry it, and brush on one solid base color. When it is dry, paint one bold shape with a medium paint pen, then add small details such as eyes or dots with an extra fine tip. Let each layer dry before the next, and finish with light coats of clear spray if the rock goes outside.
What do you put on rocks before you paint them?
Soap and water first: scrub off dirt and let the rock dry overnight. Then a base coat of acrylic craft paint, in one or two thin layers. The Kindness Rocks Project describes painting rocks with non-toxic paint first to prepare the surface for the paint pen work. A pencil sketch on the dry base helps with lettering.
Does Hobby Lobby have rock painting kits?
Yes. When we checked, Hobby Lobby listed the Hide & Seek Rock Painting Kit by Creativity for Kids, which includes 10 river rocks, 8 paint colors, transfers, 2 brushes and a sponge, for ages 6 and up. Availability varies by store, so check its website or your local store.
Sources
Last reviewed 2026-10-12. Specs and availability change; check the listing before you buy.