Materials Needed

Flat, smooth rock (any shape)
White or pale acrylic paint (for background)
Navy blue acrylic paint
Cobalt blue acrylic paint
Teal acrylic paint
Gold or yellow acrylic paint
Fine detail brush
Medium flat brush
Ruler or straight edge (optional)
Clear sealant spray
Pencil

Step-by-Step Instructions

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Step 1: Paint the base and sketch the diamond

Wash and dry your rock. Paint the surface white or pale. Let dry. Using a pencil and ruler, sketch a large diamond shape (square rotated 45 degrees) centered on the rock. Inside, draw lines from the corners to the center to divide the diamond into four triangular sections. Add additional parallel lines inside each section for a faceted gem effect.

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Step 2: Paint each triangular facet

Paint each triangular facet of the diamond a different shade of blue or teal. The top facet gets the lightest shade (sky blue), the side facets get medium blue, and the bottom facet the darkest navy. This graduation of tone mimics how light reflects off a real cut gemstone.

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Step 3: Add gold outlines

Using gold paint and a fine brush, carefully outline all the facet division lines and the outer edge of the diamond shape. These gold lines are like the metal setting of a gem — they define the geometric precision and add a luxurious touch. Work slowly and steadily for sharp, clean lines.

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Step 4: Add geometric corner decorations

In the corners around the diamond, add small geometric decorations using navy blue paint: tiny triangles, dots arranged in diamond patterns, or small cross shapes. These corner fillers extend the geometric theme across the whole rock surface.

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Step 5: Add white highlights and seal

Add a small bright white dot or triangle highlight near the top left of the diamond to suggest reflected light. This single highlight brings the gem to life and makes it look three-dimensional. Apply clear sealant when dry.

Step 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.

Helpful Tips

Use a ruler for the initial diamond sketch — geometric patterns look best with precise straight lines.
Different shades of the same color family on each facet creates a stunning 3D gem illusion.
Gold outlines transform a flat painted shape into something that looks like a real jewel.
Keep the facet lines thin and clean — they should guide the eye, not dominate it.
Try rose gold, emerald green, or amethyst purple color schemes for different gem varieties.
For the RoxGeo code on the bottom, use a waterproof permanent marker (like Sharpie) or an acrylic paint pen. Apply 2–3 coats of clear sealant over the code — this keeps it readable through rain, sun, and handling for months.
Writing #ROXCODE (e.g. #ROXABC123) on your rock makes it easy to find via Google search. We actively optimize for this hashtag, so anyone who searches for it will find your rock’s profile page quickly.
The full address ROXGEO.COM/CODE takes the finder directly to your rock’s card, where they can see its full travel history, previous finders, and photos from every stop on its journey.

Paint this rock and track its journey with RoxGeo!

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