The stones, coming from the 4 corners of the world are certified "Conscious stones" allowing all people to associate their stone to a charitable project around a mine. These are carefully selected by a certified gemologist.
Cleaning: Stones should be regularly washed and cleaned. The latter absorb the energies of their environment. In addition, dust can affect the properties of crystals.
Pass stones under running water to purify and clean.
To recharge your crystals, you can place them in the sun (be careful not to leave the quartz too long in your absence in the direct sun for a long time for the risks of fires) or lunar light (mainly during the full moon Or moon changes).