A micro-crystalline Quartz from Brazil.
Agates can be many different colors. The natural color of the stone will to some degree determine its properties. The only constant with agates is that they are usually banded in some way. Brightly dyed agates are usually but not always crap.
Aids emotional balance and physical strength; infuses courage, flexibility and dynamism, protecting against illness and bad luck. Helps digestion, calms stomach cramps, strengthens the immune system and protects from negative stuff.