Hackaday · Creativity & design

Growing Large Copper Sulfate Crystals

The Crystalverse has detailed a method for growing large copper sulfate crystals, expanding on previous techniques.

Copper sulfate can be obtained directly, as it is commonly sold as a fungicide, rootkiller, or drying agent. A saturated solution is created using near-boiling water, resulting in a blue liquid if free of contaminants.

To encourage a single large crystal, crystallization sites on the bottom of the container should be removed. A seed crystal is then suspended in the saturated solution.

The growth process requires patience, potentially taking months. Maintaining a constant temperature and managing the solution are crucial for optimal results.

A notable characteristic of copper sulfate crystals is that their blue color is due to water molecules. Dehydration causes the crystals to turn white.

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