Agates are generally known as stones of grounding and stability, emitting a slower vibration pattern than most other crystals. This is not a bad thing, rather they are regarded as strengthening influences which provide a lasting connection or resonance with whatever type or color frequency pattern that particular variety represents. Color therapy is very effective; light blue resonates with throat chakra and will help to increase communication skills as well as balance and ground that chakra. 
Resonates with Throat and Root chakra.
 
Crystals shown in picture are average pieces of what one should expect to receive, we will always hand select the best ones available for you!