Crystals are amplifiers of energy. This is why I am always cleansing the crystal shop, why I am always cleansing the crystals, and why I take sourcing so seriously.
Anyone who comes into the shop can leave behind energy and the crystals will amplify that. Where ever the crystals are coming from in the world and the energy of who is mining them will carry through the crystals too.
This is why some crystals feel so dull in energy and some are even dangerous.
It's really simple to amplify your frequency and intentions with crystals which is why it is so important to make sure you're working with crystals that are high quality that you have cleared, charged AND ACTIVATED.
Activate your crystal by speaking an affirmation or mantra.
Crystals are like computers so the more clear you can give the code, the more concise it will work for you.
Bottom line, stay clear with intention, work with a crystal you've charged, cleared and activated and ALWAYS work in the frequency for the highest good of all.
It's not hard, you just have to be aware, mindful and intentional.