The red agate crystal has been used for centuries as a protection token against negative energies while instilling its wearer with self-confidence and positive vibes. Known as the "warrior's stone," it is said to light the fire in your heart and motivate you to pursue what you want.
Grounding & Protection 
Agate is a grounding stone, bringing about an emotional, physical, and intellectual balance. Vibrating at a low steady frequency, agate is a slow and steady crystal that strengthens the aura bringing you energetic stability. A stone for protection, keep this crystal in your living space to protect from negative energies and thoughts.