To do this, take a glass and weight 100 gram of aluminum potassium sulfate and 12 grams of chromium potassium sulfate in it. Adding chrome alum will make the crystals violet.
Though it’s better to save these crystals as it is possible to prepare a solution and raise other crystals out of them in the future.
Also, in single crystals growing it is important to avoid extremes of temperature and pollution of the solution.
After the nail polish has been dried out it’s okay to take the crystals with bare hands. Crystal growing is very exciting activity that develops patience and mind.