Sea Shell Rock Painting

Step-by-Step Instructions

1. Base coat and sketch the spiral

   Wash and dry your rock. Paint the entire surface with cream or ivory paint. Let dry. Using a pencil, sketch the spiral of a nautilus shell - start with a small point at the center and draw an increasingly wide spiral working outward. The nautilus spiral is mathematically elegant: each chamber is larger than the previous.

2. Paint the spiral chambers

   Paint the interior chambers of the shell in alternating warm tones: cream, peach, light pink, and tan. Each spiral section gets a different shade. The colors should flow naturally from warm peach at the center to cooler cream at the outer edge, creating a gradient across the chambers.

3. Add pearlescent shading

   Using white paint slightly thinned with water, brush delicate highlights along the upper edge of each spiral chamber. This creates a pearlescent sheen that mimics the iridescent inner surface of real sea shells. Let it dry between the coats.

4. Draw the dividing lines

   Using a fine brush and dark tan or light brown paint, carefully trace the dividing lines between each spiral chamber. These curved lines follow the spiral and separate the different-colored sections. They should be thin but visible, like the suture lines of a real nautilus.

5. Add outer shell details and seal

   Paint the outer edge of the shell with a series of thin curved lines in tan and white to suggest the ridged texture of the shell exterior. Apply a gloss sealant for a beautiful pearlescent finish that mimics the real lustre of sea shells.

6. Add RoxGeo Code

   On the bottom or back of your rock, write ROXGEO.COM followed by a slash and your rock’s unique code (e.g. ROXGEO.COM/ABC123). This lets the finder go directly to your rock’s profile page and log their discovery. If the rock is too small for the full address, write #ROX followed by the code without spaces (e.g. #ROXABC123) — it’s short, easy to search on Google, and leads straight to your rock’s journey page. Use a fine-tip permanent marker or acrylic paint pen, and seal it with clear varnish so the code stays readable through rain, sun, and adventure.