A crystal planting kit with four crystals typically includes chemical compounds, seed rocks or bases, stirring tools, and containers to grow mineral-like crystal clusters such as quartz, amethyst, or emerald. These educational STEM science kits require dissolving powders in hot water and waiting a few days for crystals to bloom.

Expermental Principle of crystal planting 

As the hot saturated solution cools, due to changes in solubility, the solution precipitates out as a crystal, a process called crystall.