In a word – “Energetically.”
The powers or properties of crystals (and most substances are crystalline), come from their rigid internal atomic structure. Even when ground down small, each piece has the same shape and properties as the whole.
Crystals are used to absorb, conserve, focus and emit energy.
In science terms, we use Kyanite for it’s heat resistance properties in our spark plugs. We use Rubies to focus our lasers in industry, Diamonds for cutting tools and Beryl (Emerald is a type of Beryl) to create Beryllium Salts, which we use in our florescent tubes. Rock Crystal with it’s piezoelectric properties is used extensively in our circuit boards and chips. They are all around us in some form.
In crystal healing we are still using their energetic properties to transform and shift our own energetic fields. I will go more in depth on this topic in another post.
“If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.” ―