Self-grown copper-sulfate crystal

ScaleOther

PlaceWuxi No. 1 High School · Co-Tech bench

FieldCrystallography

Period2014 — 2017

Fig. 1 — Slow-grown copper-sulfate single crystal with parallelogram facets. — Fig. 1 — Slow-grown copper-sulfate single crystal, parallelogram-faceted.

Fig. 2 — Second view of the copper-sulfate single crystal. — Fig. 2 — Second view of the same crystal under different lighting.

This copper-sulfate crystal was grown because crystals are beautiful: a clear blue object with flat faces, sharp angles, and a color that looks almost artificial even though it comes from an ordinary chemical solution. The goal was aesthetic rather than utilitarian — to make a small piece of ordered matter that could be held up to the light.

Growing a good crystal still requires patience and care. If the solution crystallizes too quickly, many tiny grains form and the result becomes cloudy or irregular. Slow growth rewards a cleaner process: choosing a seed, keeping the solution clear, and letting material add to the same structure over time. The finished crystal had transparent blue facets and a clean geometric form, close to the elegant parallelogram-like shape visible in the original photos.