
Every unit in this octagon diamond cross grid coloring page hides three shapes at once: an octagon border, a nested diamond, and an X junction locking them together.
Octagons tile the surface in a tight, unbroken grid, each one outlined with a concentric inner ring and centered on a small diamond within a diamond. Where four octagons meet, an X-shaped cross forms naturally, giving the eye two completely different patterns to follow depending on where it lands.
This octagon diamond cross grid coloring page sits in the Geometric Designs collection and rewards a systematic approach: color the nested diamonds first, then the octagon rings, and the cross junctions resolve on their own. Sections are small but clearly bounded, making it satisfying to finish a row at a time rather than overwhelming to tackle all at once.


Alcohol markers can flood the octagon rings quickly and blend cleanly, but keep the tip away from the tiny diamond centers where bleed is a real risk. Colored pencils let you build gradients across the octagon bodies without any bleed worry, and layering two close shades across the concentric rings adds depth with minimal effort. A fine liner in a single accent color can trace the X junctions after coloring to make that secondary pattern pop.

Card stock at 65 lb or heavier keeps the page from warping if you use markers on the tight sections. Scale to 100 percent so the diamond centers stay large enough to color without frustration, since scaling down compresses them into near-unworkable slivers.