Crystals come in a wide variety of sizes, shapes and colors. Their matrixes follow the patterning of Sacred Geometry
All crystal and gemstones are living organisms. Crystals have a life energy of their own. They are living in some manner of the word as they slowly grow in clusters. They are part of the Mineral Kingdom Most are grown in nature. Some that are synthetically produced.
Crystals vibrate to their own frequency. The frequency they send out will determine which crystal you will chose at a certain point in your life. You do chose different crystals as your needs change.
Many crystals are as old as our planet. Some people think of them as Record Keepers of the planet.
Some crystals supposedly come here from off planet - such as moldavite or other celestial crystals.
Single terminated crystals have a point at one end.
Double terminated crystals have points at both ends.
Some crystals come to you with holographic images in them.
Sometimes they develop images, to get smoky after you have worked with them.
These are projections from your mind into the crystal.
Most crystals change during the years they are with you.
Some people can hold a crystal and 'receive' telepathic messages from it. This is called scrying.
Some crystals are more like rocks or stones. They are usually polished (called tumbled) and come in a variety of sizes.
Crystals balance or amplify energy fields. They are used in communication devices.
You can place crystals in water for 24 hours then drink the water.
Info found on Crystallinks